path: root/support/texlab/src/syntax/build_log.rs

use std::{cmp::Ordering, path::PathBuf};

use once_cell::sync::Lazy;
use regex::{Match, Regex};

#[derive(Debug, PartialEq, Eq, Clone, Copy, PartialOrd, Ord, Hash)]
pub enum BuildErrorLevel {
    Error,
    Warning,
}

#[derive(Debug, PartialEq, Eq, Clone, Hash)]
pub struct BuildError {
    pub relative_path: PathBuf,
    pub level: BuildErrorLevel,
    pub message: String,
    pub line: Option<u32>,
}

const MAX_LINE_LENGTH: usize = 79;

pub static PACKAGE_MESSAGE_REGEX: Lazy<Regex> =
    Lazy::new(|| Regex::new("^\\([a-zA-Z_\\-]+\\)\\s*(?P<msg>.*)$").unwrap());

pub static FILE_REGEX: Lazy<Regex> =
    Lazy::new(|| Regex::new("\\((?P<file>[^\r\n()]+\\.(tex|sty|cls))").unwrap());

pub static TEX_ERROR_REGEX: Lazy<Regex> = Lazy::new(|| {
    Regex::new("(?m)^! ((?P<msg1>(.|\r|\n)*?)\r?\nl\\.(?P<line>\\d+)|(?P<msg2>[^\r\n]*))").unwrap()
});

pub static WARNING_REGEX: Lazy<Regex> =
    Lazy::new(|| Regex::new("(LaTeX|Package [a-zA-Z_\\-]+) Warning: (?P<msg>[^\r\n]*)").unwrap());

pub static BAD_BOX_REGEX: Lazy<Regex> = Lazy::new(|| {
    Regex::new("(?P<msg>(Ov|Und)erfull \\\\[hv]box[^\r\n]*lines? (?P<line>\\d+)[^\r\n]*)").unwrap()
});

#[derive(Debug, PartialEq, Eq, Clone, Hash)]
pub struct Parse {
    pub errors: Vec<BuildError>,
}

pub fn parse(log: &str) -> Parse {
    let log = prepare_log(log);
    let mut ranges: Vec<FileRange> = FILE_REGEX
        .find_iter(&log)
        .map(|result| FileRange::create(&log, result))
        .collect();
    ranges.sort();

    let tex_errors = extract_matches(&log, &ranges, &TEX_ERROR_REGEX, BuildErrorLevel::Error);
    let warnings = extract_matches(&log, &ranges, &WARNING_REGEX, BuildErrorLevel::Warning);
    let bad_boxes = extract_matches(&log, &ranges, &BAD_BOX_REGEX, BuildErrorLevel::Warning);

    Parse {
        errors: vec![tex_errors, warnings, bad_boxes].concat(),
    }
}

fn extract_matches(
    log: &str,
    ranges: &[FileRange],
    regex: &Regex,
    level: BuildErrorLevel,
) -> Vec<BuildError> {
    let mut errors = Vec::new();
    for result in regex.find_iter(&log) {
        let captures = regex.captures(&log[result.start()..result.end()]).unwrap();
        let message = captures
            .name("msg")
            .or_else(|| captures.name("msg1"))
            .or_else(|| captures.name("msg2"))
            .unwrap()
            .as_str()
            .lines()
            .next()
            .unwrap_or_default()
            .to_owned();

        if let Some(range) = ranges.iter().find(|range| range.contains(result.start())) {
            let line = captures
                .name("line")
                .map(|result| u32::from_str_radix(result.as_str(), 10).unwrap() - 1);

            errors.push(BuildError {
                relative_path: range.path.clone(),
                level,
                message,
                line,
            });
        }
    }
    errors
}

fn prepare_log(log: &str) -> String {
    let mut old_lines = log.lines();
    let mut new_lines: Vec<String> = Vec::new();
    while let Some(line) = old_lines.next() {
        if PACKAGE_MESSAGE_REGEX.is_match(&line) {
            let captures = PACKAGE_MESSAGE_REGEX.captures(&line).unwrap();
            if let Some(last_line) = new_lines.last_mut() {
                last_line.push(' ');
                last_line.push_str(captures.name("msg").unwrap().as_str());
            }
        } else if line.ends_with("...") {
            let mut new_line = line[line.len() - 3..].to_owned();
            if let Some(old_line) = old_lines.next() {
                new_line.push_str(&old_line);
            }
            new_lines.push(new_line);
        } else if line.chars().count() == MAX_LINE_LENGTH {
            let mut new_line = String::new();
            new_line.push_str(line);
            if let Some(old_line) = old_lines.next() {
                new_line.push_str(old_line);
            }
            new_lines.push(new_line);
        } else {
            new_lines.push(line.to_owned());
        }
    }
    new_lines.join("\n")
}

#[derive(Debug, PartialEq, Eq, Clone)]
struct FileRange {
    pub path: PathBuf,
    pub start: usize,
    pub end: usize,
}

impl FileRange {
    fn create(log: &str, result: Match) -> Self {
        let mut balance = 1;
        let mut end = result.start() + 1;
        let chars = (&log[result.start() + 1..]).chars();
        for c in chars {
            if balance <= 0 {
                break;
            }

            if c == '(' {
                balance += 1;
            } else if c == ')' {
                balance -= 1;
            }
            end += c.len_utf8();
        }

        let captures = FILE_REGEX.captures(result.as_str()).unwrap();
        let path = PathBuf::from(captures.name("file").unwrap().as_str());
        Self {
            path,
            start: result.start(),
            end,
        }
    }

    fn len(&self) -> usize {
        self.end - self.start + 1
    }

    fn contains(&self, index: usize) -> bool {
        index >= self.start && index <= self.end
    }
}

impl Ord for FileRange {
    fn cmp(&self, other: &Self) -> Ordering {
        self.len().cmp(&other.len())
    }
}

impl PartialOrd for FileRange {
    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
        Some(self.cmp(other))
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use indoc::indoc;
    use insta::assert_debug_snapshot;

    #[test]
    fn test_parse_001() {
        let log = indoc! {
        r#"
                This is pdfTeX, Version 3.14159265-2.6-1.40.18 (TeX Live 2017/W32TeX) (preloaded format=pdflatex 2018.3.30)  26 DEC 2018 16:50
                entering extended mode
                restricted \write18 enabled.
                %&-line parsing enabled.
                **./parent.tex
                (./parent.tex
                LaTeX2e <2017-04-15>
                Babel <3.10> and hyphenation patterns for 84 language(s) loaded.
                (/TexLive/texmf-dist/tex/latex/base/article.cls
                Document Class: article 2014/09/29 v1.4h Standard LaTeX document class
                (/TexLive/texmf-dist/tex/latex/base/size10.clo
                File: size10.clo 2014/09/29 v1.4h Standard LaTeX file (size option)
                )
                \c@part=\count79
                \c@section=\count80
                \c@subsection=\count81
                \c@subsubsection=\count82
                \c@paragraph=\count83
                \c@subparagraph=\count84
                \c@figure=\count85
                \c@table=\count86
                \abovecaptionskip=\skip41
                \belowcaptionskip=\skip42
                \bibindent=\dimen102
                )
                (/TexLive/texmf-dist/tex/latex/multirow/bigstrut.sty
                Package: bigstrut 2016/11/25 v2.2 Provide larger struts in tabulars
                \bigstrutjot=\dimen103
                )
                (/TexLive/texmf-dist/tex/latex/multirow/multirow.sty
                Package: multirow 2016/11/25 v2.2 Span multiple rows of a table
                \multirow@colwidth=\skip43
                \multirow@cntb=\count87
                \multirow@dima=\skip44
                ) (./parent.aux)
                \openout1 = `parent.aux'.

                LaTeX Font Info:    Checking defaults for OML/cmm/m/it on input line 6.
                LaTeX Font Info:    ... okay on input line 6.
                LaTeX Font Info:    Checking defaults for T1/cmr/m/n on input line 6.
                LaTeX Font Info:    ... okay on input line 6.
                LaTeX Font Info:    Checking defaults for OT1/cmr/m/n on input line 6.
                LaTeX Font Info:    ... okay on input line 6.
                LaTeX Font Info:    Checking defaults for OMS/cmsy/m/n on input line 6.
                LaTeX Font Info:    ... okay on input line 6.
                LaTeX Font Info:    Checking defaults for OMX/cmex/m/n on input line 6.
                LaTeX Font Info:    ... okay on input line 6.
                LaTeX Font Info:    Checking defaults for U/cmr/m/n on input line 6.
                LaTeX Font Info:    ... okay on input line 6.

                Overfull \hbox (200.00162pt too wide) in paragraph at lines 8--9
                []\OT1/cmr/m/n/10 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
                aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
                []

                LaTeX Font Info:    External font `cmex10' loaded for size
                (Font)              <7> on input line 11.
                LaTeX Font Info:    External font `cmex10' loaded for size
                (Font)              <5> on input line 11.

                Overfull \vbox (3.19998pt too high) detected at line 23
                []

                [1

                {/TexLive/texmf-var/fonts/map/pdftex/updmap/pdftex.map}] (./parent.aux) )
                Here is how much of TeX's memory you used:
                265 strings out of 492995
                3121 string characters out of 6138727
                55074 words of memory out of 5000000
                3896 multiletter control sequences out of 15000+600000
                3640 words of font info for 14 fonts, out of 8000000 for 9000
                1141 hyphenation exceptions out of 8191
                23i,20n,20p,124b,282s stack positions out of 5000i,500n,10000p,200000b,80000s
                </
                TexLive/texmf-dist/fonts/type1/public/amsfonts/cm/cmr10.pfb></TexLive/texmf-d
                ist/fonts/type1/public/amsfonts/cm/cmr7.pfb>
                Output written on parent.pdf (1 page, 17505 bytes).
                PDF statistics:
                16 PDF objects out of 1000 (max. 8388607)
                10 compressed objects within 1 object stream
                0 named destinations out of 1000 (max. 500000)
                1 words of extra memory for PDF output out of 10000 (max. 10000000)"#,
        };

        assert_eq!(
            parse(&log).errors,
            vec![
                BuildError {
                    relative_path: "./parent.tex".into(),
                    level: BuildErrorLevel::Warning,
                    message: "Overfull \\hbox (200.00162pt too wide) in paragraph at lines 8--9"
                        .into(),
                    line: Some(7),
                },
                BuildError {
                    relative_path: "./parent.tex".into(),
                    level: BuildErrorLevel::Warning,
                    message: "Overfull \\vbox (3.19998pt too high) detected at line 23".into(),
                    line: Some(22),
                }
            ]
        );
    }

    #[test]
    fn test_parse_002() {
        let log = indoc! {
        r#"
                This is pdfTeX, Version 3.14159265-2.6-1.40.18 (TeX Live 2017/W32TeX) (preloaded format=pdflatex 2018.3.30)  26 DEC 2018 16:52
                entering extended mode
                restricted \write18 enabled.
                %&-line parsing enabled.
                **./parent.tex
                (./parent.tex
                LaTeX2e <2017-04-15>
                Babel <3.10> and hyphenation patterns for 84 language(s) loaded.
                (/TexLive/texmf-dist/tex/latex/base/article.cls
                Document Class: article 2014/09/29 v1.4h Standard LaTeX document class
                (/TexLive/texmf-dist/tex/latex/base/size10.clo
                File: size10.clo 2014/09/29 v1.4h Standard LaTeX file (size option)
                )
                \c@part=\count79
                \c@section=\count80
                \c@subsection=\count81
                \c@subsubsection=\count82
                \c@paragraph=\count83
                \c@subparagraph=\count84
                \c@figure=\count85
                \c@table=\count86
                \abovecaptionskip=\skip41
                \belowcaptionskip=\skip42
                \bibindent=\dimen102
                ) (./parent.aux (./child.aux))
                \openout1 = `parent.aux'.

                LaTeX Font Info:    Checking defaults for OML/cmm/m/it on input line 4.
                LaTeX Font Info:    ... okay on input line 4.
                LaTeX Font Info:    Checking defaults for T1/cmr/m/n on input line 4.
                LaTeX Font Info:    ... okay on input line 4.
                LaTeX Font Info:    Checking defaults for OT1/cmr/m/n on input line 4.
                LaTeX Font Info:    ... okay on input line 4.
                LaTeX Font Info:    Checking defaults for OMS/cmsy/m/n on input line 4.
                LaTeX Font Info:    ... okay on input line 4.
                LaTeX Font Info:    Checking defaults for OMX/cmex/m/n on input line 4.
                LaTeX Font Info:    ... okay on input line 4.
                LaTeX Font Info:    Checking defaults for U/cmr/m/n on input line 4.
                LaTeX Font Info:    ... okay on input line 4.
                (./child.tex
                ! Undefined control sequence.
                l.1 \foo

                The control sequence at the end of the top line
                of your error message was never \def'ed. If you have
                misspelled it (e.g., `\hobx'), type `I' and the correct
                spelling (e.g., `I\hbox'). Otherwise just continue,
                and I'll forget about whatever was undefined.

                ) (./parent.aux) )
                Here is how much of TeX's memory you used:
                205 strings out of 492995
                2149 string characters out of 6138727
                54074 words of memory out of 5000000
                3841 multiletter control sequences out of 15000+600000
                3640 words of font info for 14 fonts, out of 8000000 for 9000
                1141 hyphenation exceptions out of 8191
                23i,1n,17p,116b,36s stack positions out of 5000i,500n,10000p,200000b,80000s

                No pages of output.
                PDF statistics:
                0 PDF objects out of 1000 (max. 8388607)
                0 named destinations out of 1000 (max. 500000)
                1 words of extra memory for PDF output out of 10000 (max. 10000000)"#,
        };

        assert_eq!(
            parse(&log).errors,
            vec![BuildError {
                relative_path: "./child.tex".into(),
                level: BuildErrorLevel::Error,
                message: "Undefined control sequence.".into(),
                line: Some(0)
            }]
        );
    }

    #[test]
    fn test_parse_003() {
        let log = indoc! {
        r#"
                This is pdfTeX, Version 3.14159265-2.6-1.40.18 (TeX Live 2017/W32TeX) (preloaded format=pdflatex 2018.3.30)  26 DEC 2018 16:51
                entering extended mode
                restricted \write18 enabled.
                %&-line parsing enabled.
                **./parent.tex
                (./parent.tex
                LaTeX2e <2017-04-15>
                Babel <3.10> and hyphenation patterns for 84 language(s) loaded.
                (/TexLive/texmf-dist/tex/latex/base/article.cls
                Document Class: article 2014/09/29 v1.4h Standard LaTeX document class
                (/TexLive/texmf-dist/tex/latex/base/size10.clo
                File: size10.clo 2014/09/29 v1.4h Standard LaTeX file (size option)
                )
                \c@part=\count79
                \c@section=\count80
                \c@subsection=\count81
                \c@subsubsection=\count82
                \c@paragraph=\count83
                \c@subparagraph=\count84
                \c@figure=\count85
                \c@table=\count86
                \abovecaptionskip=\skip41
                \belowcaptionskip=\skip42
                \bibindent=\dimen102
                ) (./parent.aux)
                \openout1 = `parent.aux'.

                LaTeX Font Info:    Checking defaults for OML/cmm/m/it on input line 4.
                LaTeX Font Info:    ... okay on input line 4.
                LaTeX Font Info:    Checking defaults for T1/cmr/m/n on input line 4.
                LaTeX Font Info:    ... okay on input line 4.
                LaTeX Font Info:    Checking defaults for OT1/cmr/m/n on input line 4.
                LaTeX Font Info:    ... okay on input line 4.
                LaTeX Font Info:    Checking defaults for OMS/cmsy/m/n on input line 4.
                LaTeX Font Info:    ... okay on input line 4.
                LaTeX Font Info:    Checking defaults for OMX/cmex/m/n on input line 4.
                LaTeX Font Info:    ... okay on input line 4.
                LaTeX Font Info:    Checking defaults for U/cmr/m/n on input line 4.
                LaTeX Font Info:    ... okay on input line 4.

                LaTeX Warning: Citation `foo' on page 1 undefined on input line 6.

                [1

                {/TexLive/texmf-var/fonts/map/pdftex/updmap/pdftex.map}] (./parent.aux)

                LaTeX Warning: There were undefined references.

                )
                Here is how much of TeX's memory you used:
                204 strings out of 492995
                2142 string characters out of 6138727
                54074 words of memory out of 5000000
                3842 multiletter control sequences out of 15000+600000
                3948 words of font info for 15 fonts, out of 8000000 for 9000
                1141 hyphenation exceptions out of 8191
                23i,4n,21p,116b,107s stack positions out of 5000i,500n,10000p,200000b,80000s
                </TexLive/texmf-dist/fonts/type1/public/amsfonts/cm/cmbx10.pfb></TexLive/
                texmf-dist/fonts/type1/public/amsfonts/cm/cmr10.pfb>
                Output written on parent.pdf (1 page, 17339 bytes).
                PDF statistics:
                16 PDF objects out of 1000 (max. 8388607)
                10 compressed objects within 1 object stream
                0 named destinations out of 1000 (max. 500000)
                1 words of extra memory for PDF output out of 10000 (max. 10000000)"#,
        };

        assert_eq!(
            parse(&log).errors,
            vec![
                BuildError {
                    relative_path: "./parent.tex".into(),
                    level: BuildErrorLevel::Warning,
                    message: "Citation `foo' on page 1 undefined on input line 6.".into(),
                    line: None
                },
                BuildError {
                    relative_path: "./parent.tex".into(),
                    level: BuildErrorLevel::Warning,
                    message: "There were undefined references.".into(),
                    line: None,
                }
            ]
        );
    }

    #[test]
    fn test_parse_004() {
        let log = indoc! {
        r#"
                This is pdfTeX, Version 3.14159265-2.6-1.40.18 (TeX Live 2017/W32TeX) (preloaded format=pdflatex 2018.3.30)  26 DEC 2018 16:40
                entering extended mode
                restricted \write18 enabled.
                %&-line parsing enabled.
                **./parent.tex
                (./parent.tex
                LaTeX2e <2017-04-15>
                Babel <3.10> and hyphenation patterns for 84 language(s) loaded.
                (/TexLive/texmf-dist/tex/latex/base/article.cls
                Document Class: article 2014/09/29 v1.4h Standard LaTeX document class
                (/TexLive/texmf-dist/tex/latex/base/size10.clo
                File: size10.clo 2014/09/29 v1.4h Standard LaTeX file (size option)
                )
                \c@part=\count79
                \c@section=\count80
                \c@subsection=\count81
                \c@subsubsection=\count82
                \c@paragraph=\count83
                \c@subparagraph=\count84
                \c@figure=\count85
                \c@table=\count86
                \abovecaptionskip=\skip41
                \belowcaptionskip=\skip42
                \bibindent=\dimen102
                )
                (/TexLive/texmf-dist/tex/generic/babel/babel.sty
                Package: babel 2017/05/19 3.10 The Babel package

                ! Package babel Error: Unknown option `foo'. Either you misspelled it
                (babel)                or the language definition file foo.ldf was not found.

                See the babel package documentation for explanation.
                Type  H <return>  for immediate help.
                ...

                l.393 \ProcessOptions*

                Valid options are: shorthands=, KeepShorthandsActive,
                activeacute, activegrave, noconfigs, safe=, main=, math=
                headfoot=, strings=, config=, hyphenmap=, or a language name.

                ! Package babel Error: You haven't specified a language option.

                See the babel package documentation for explanation.
                Type  H <return>  for immediate help.
                ...

                l.426 ...ry to proceed from here, type x to quit.}

                You need to specify a language, either as a global option
                or as an optional argument to the \usepackage command;
                You shouldn't try to proceed from here, type x to quit.

                ) (./parent.aux)
                \openout1 = `parent.aux'.

                LaTeX Font Info:    Checking defaults for OML/cmm/m/it on input line 5.
                LaTeX Font Info:    ... okay on input line 5.
                LaTeX Font Info:    Checking defaults for T1/cmr/m/n on input line 5.
                LaTeX Font Info:    ... okay on input line 5.
                LaTeX Font Info:    Checking defaults for OT1/cmr/m/n on input line 5.
                LaTeX Font Info:    ... okay on input line 5.
                LaTeX Font Info:    Checking defaults for OMS/cmsy/m/n on input line 5.
                LaTeX Font Info:    ... okay on input line 5.
                LaTeX Font Info:    Checking defaults for OMX/cmex/m/n on input line 5.
                LaTeX Font Info:    ... okay on input line 5.
                LaTeX Font Info:    Checking defaults for U/cmr/m/n on input line 5.
                LaTeX Font Info:    ... okay on input line 5.
                (./parent.aux) )
                Here is how much of TeX's memory you used:
                304 strings out of 492995
                3421 string characters out of 6138727
                56035 words of memory out of 5000000
                3938 multiletter control sequences out of 15000+600000
                3640 words of font info for 14 fonts, out of 8000000 for 9000
                1141 hyphenation exceptions out of 8191
                23i,1n,17p,116b,36s stack positions out of 5000i,500n,10000p,200000b,80000s

                No pages of output.
                PDF statistics:
                0 PDF objects out of 1000 (max. 8388607)
                0 named destinations out of 1000 (max. 500000)
                1 words of extra memory for PDF output out of 10000 (max. 10000000)"#,
        };

        assert_eq!(
            parse(&log).errors,
            vec![
                BuildError {
                    relative_path: "/TexLive/texmf-dist/tex/generic/babel/babel.sty".into(),
                    level: BuildErrorLevel::Error,
                    message: "Package babel Error: Unknown option `foo'. Either you misspelled it or the language definition file foo.ldf was not found.".into(),
                    line: Some(392)
                },
                BuildError {
                    relative_path: "/TexLive/texmf-dist/tex/generic/babel/babel.sty".into(),
                    level: BuildErrorLevel::Error,
                    message: "Package babel Error: You haven't specified a language option.".into(),
                    line: Some(425)
                }
            ]
        );
    }

    #[test]
    fn test_parse_005() {
        let log = indoc! {
        r#"
                This is pdfTeX, Version 3.14159265-2.6-1.40.18 (TeX Live 2017/W32TeX) (preloaded format=pdflatex 2018.3.30)  26 DEC 2018 16:45
                entering extended mode
                restricted \write18 enabled.
                %&-line parsing enabled.
                **./parent.tex
                (./parent.tex
                LaTeX2e <2017-04-15>
                Babel <3.10> and hyphenation patterns for 84 language(s) loaded.
                (/TexLive/texmf-dist/tex/latex/base/article.cls
                Document Class: article 2014/09/29 v1.4h Standard LaTeX document class
                (/TexLive/texmf-dist/tex/latex/base/size10.clo
                File: size10.clo 2014/09/29 v1.4h Standard LaTeX file (size option)
                )
                \c@part=\count79
                \c@section=\count80
                \c@subsection=\count81
                \c@subsubsection=\count82
                \c@paragraph=\count83
                \c@subparagraph=\count84
                \c@figure=\count85
                \c@table=\count86
                \abovecaptionskip=\skip41
                \belowcaptionskip=\skip42
                \bibindent=\dimen102
                )
                (/TexLive/texmf-dist/tex/generic/babel/babel.sty
                Package: babel 2017/05/19 3.10 The Babel package

                (/TexLive/texmf-dist/tex/generic/babel-spanish/spanish.ldf
                Language: spanish.ldf 2016/03/03 v5.0p Spanish support from the babel system

                (/TexLive/texmf-dist/tex/generic/babel/babel.def
                File: babel.def 2017/05/19 3.10 Babel common definitions
                \babel@savecnt=\count87
                \U@D=\dimen103
                )
                \es@quottoks=\toks14
                \es@quotdepth=\count88
                Package babel Info: Making " an active character on input line 561.
                Package babel Info: Making . an active character on input line 662.
                Package babel Info: Making < an active character on input line 707.
                Package babel Info: Making > an active character on input line 707.
                ))
                (/TexLive/texmf-dist/tex/latex/biblatex/biblatex.sty
                Package: biblatex 2016/12/05 v3.7 programmable bibliographies (PK/JW/AB)

                (/TexLive/texmf-dist/tex/generic/oberdiek/pdftexcmds.sty
                Package: pdftexcmds 2017/03/19 v0.25 Utility functions of pdfTeX for LuaTeX (HO
                )

                (/TexLive/texmf-dist/tex/generic/oberdiek/infwarerr.sty
                Package: infwarerr 2016/05/16 v1.4 Providing info/warning/error messages (HO)
                )
                (/TexLive/texmf-dist/tex/generic/oberdiek/ifluatex.sty
                Package: ifluatex 2016/05/16 v1.4 Provides the ifluatex switch (HO)
                Package ifluatex Info: LuaTeX not detected.
                )
                (/TexLive/texmf-dist/tex/generic/oberdiek/ltxcmds.sty
                Package: ltxcmds 2016/05/16 v1.23 LaTeX kernel commands for general use (HO)
                )
                (/TexLive/texmf-dist/tex/generic/oberdiek/ifpdf.sty
                Package: ifpdf 2017/03/15 v3.2 Provides the ifpdf switch
                )
                Package pdftexcmds Info: LuaTeX not detected.
                Package pdftexcmds Info: \pdf@primitive is available.
                Package pdftexcmds Info: \pdf@ifprimitive is available.
                Package pdftexcmds Info: \pdfdraftmode found.
                )
                (/TexLive/texmf-dist/tex/latex/etoolbox/etoolbox.sty
                Package: etoolbox 2017/01/02 v2.4 e-TeX tools for LaTeX (JAW)
                \etb@tempcnta=\count89
                )
                (/TexLive/texmf-dist/tex/latex/graphics/keyval.sty
                Package: keyval 2014/10/28 v1.15 key=value parser (DPC)
                \KV@toks@=\toks15
                )
                (/TexLive/texmf-dist/tex/latex/oberdiek/kvoptions.sty
                Package: kvoptions 2016/05/16 v3.12 Key value format for package options (HO)

                (/TexLive/texmf-dist/tex/generic/oberdiek/kvsetkeys.sty
                Package: kvsetkeys 2016/05/16 v1.17 Key value parser (HO)

                (/TexLive/texmf-dist/tex/generic/oberdiek/etexcmds.sty
                Package: etexcmds 2016/05/16 v1.6 Avoid name clashes with e-TeX commands (HO)
                Package etexcmds Info: Could not find \expanded.
                (etexcmds)             That can mean that you are not using pdfTeX 1.50 or
                (etexcmds)             that some package has redefined \expanded.
                (etexcmds)             In the latter case, load this package earlier.
                )))
                (/TexLive/texmf-dist/tex/latex/logreq/logreq.sty
                Package: logreq 2010/08/04 v1.0 xml request logger
                \lrq@indent=\count90

                (/TexLive/texmf-dist/tex/latex/logreq/logreq.def
                File: logreq.def 2010/08/04 v1.0 logreq spec v1.0
                ))
                (/TexLive/texmf-dist/tex/latex/base/ifthen.sty
                Package: ifthen 2014/09/29 v1.1c Standard LaTeX ifthen package (DPC)
                )
                (/TexLive/texmf-dist/tex/latex/url/url.sty
                \Urlmuskip=\muskip10
                Package: url 2013/09/16  ver 3.4  Verb mode for urls, etc.
                )
                (/TexLive/texmf-dist/tex/generic/xstring/xstring.sty
                (/TexLive/texmf-dist/tex/generic/xstring/xstring.tex
                \@xs@message=\write3
                \integerpart=\count91
                \decimalpart=\count92
                )
                Package: xstring 2013/10/13  v1.7c  String manipulations (C Tellechea)
                )
                \c@tabx@nest=\count93
                \c@listtotal=\count94
                \c@listcount=\count95
                \c@liststart=\count96
                \c@liststop=\count97
                \c@citecount=\count98
                \c@citetotal=\count99
                \c@multicitecount=\count100
                \c@multicitetotal=\count101
                \c@instcount=\count102
                \c@maxnames=\count103
                \c@minnames=\count104
                \c@maxitems=\count105
                \c@minitems=\count106
                \c@citecounter=\count107
                \c@savedcitecounter=\count108
                \c@uniquelist=\count109
                \c@uniquename=\count110
                \c@refsection=\count111
                \c@refsegment=\count112
                \c@maxextratitle=\count113
                \c@maxextratitleyear=\count114
                \c@maxextrayear=\count115
                \c@maxextraalpha=\count116
                \c@abbrvpenalty=\count117
                \c@highnamepenalty=\count118
                \c@lownamepenalty=\count119
                \c@maxparens=\count120
                \c@parenlevel=\count121
                \blx@tempcnta=\count122
                \blx@tempcntb=\count123
                \blx@tempcntc=\count124
                \blx@maxsection=\count125
                \blx@maxsegment@0=\count126
                \blx@notetype=\count127
                \blx@parenlevel@text=\count128
                \blx@parenlevel@foot=\count129
                \blx@sectionciteorder@0=\count130
                \labelnumberwidth=\skip43
                \labelalphawidth=\skip44
                \biblabelsep=\skip45
                \bibitemsep=\skip46
                \bibnamesep=\skip47
                \bibinitsep=\skip48
                \bibparsep=\skip49
                \bibhang=\skip50
                \blx@bcfin=\read1
                \blx@bcfout=\write4
                \c@mincomprange=\count131
                \c@maxcomprange=\count132
                \c@mincompwidth=\count133
                Package biblatex Info: Trying to load biblatex default data model...
                Package biblatex Info: ... file 'blx-dm.def' found.

                (/TexLive/texmf-dist/tex/latex/biblatex/blx-dm.def)
                Package biblatex Info: Trying to load biblatex style data model...
                Package biblatex Info: ... file 'ieee.dbx' not found.
                Package biblatex Info: Trying to load biblatex custom data model...
                Package biblatex Info: ... file 'biblatex-dm.cfg' not found.
                \c@afterword=\count134
                \c@savedafterword=\count135
                \c@annotator=\count136
                \c@savedannotator=\count137
                \c@author=\count138
                \c@savedauthor=\count139
                \c@bookauthor=\count140
                \c@savedbookauthor=\count141
                \c@commentator=\count142
                \c@savedcommentator=\count143
                \c@editor=\count144
                \c@savededitor=\count145
                \c@editora=\count146
                \c@savededitora=\count147
                \c@editorb=\count148
                \c@savededitorb=\count149
                \c@editorc=\count150
                \c@savededitorc=\count151
                \c@foreword=\count152
                \c@savedforeword=\count153
                \c@holder=\count154
                \c@savedholder=\count155
                \c@introduction=\count156
                \c@savedintroduction=\count157
                \c@namea=\count158
                \c@savednamea=\count159
                \c@nameb=\count160
                \c@savednameb=\count161
                \c@namec=\count162
                \c@savednamec=\count163
                \c@translator=\count164
                \c@savedtranslator=\count165
                \c@shortauthor=\count166
                \c@savedshortauthor=\count167
                \c@shorteditor=\count168
                \c@savedshorteditor=\count169
                \c@labelname=\count170
                \c@savedlabelname=\count171
                \c@institution=\count172
                \c@savedinstitution=\count173
                \c@lista=\count174
                \c@savedlista=\count175
                \c@listb=\count176
                \c@savedlistb=\count177
                \c@listc=\count178
                \c@savedlistc=\count179
                \c@listd=\count180
                \c@savedlistd=\count181
                \c@liste=\count182
                \c@savedliste=\count183
                \c@listf=\count184
                \c@savedlistf=\count185
                \c@location=\count186
                \c@savedlocation=\count187
                \c@organization=\count188
                \c@savedorganization=\count189
                \c@origlocation=\count190
                \c@savedoriglocation=\count191
                \c@origpublisher=\count192
                \c@savedorigpublisher=\count193
                \c@publisher=\count194
                \c@savedpublisher=\count195
                \c@language=\count196
                \c@savedlanguage=\count197
                \c@pageref=\count198
                \c@savedpageref=\count199
                \shorthandwidth=\skip51
                \shortjournalwidth=\skip52
                \shortserieswidth=\skip53
                \shorttitlewidth=\skip54
                \shortauthorwidth=\skip55
                \shorteditorwidth=\skip56
                Package biblatex Info: Trying to load compatibility code...
                Package biblatex Info: ... file 'blx-compat.def' found.

                (/TexLive/texmf-dist/tex/latex/biblatex/blx-compat.def
                File: blx-compat.def 2016/12/05 v3.7 biblatex compatibility (PK/JW/AB)
                )
                Package biblatex Info: Trying to load generic definitions...
                Package biblatex Info: ... file 'biblatex.def' found.

                (/TexLive/texmf-dist/tex/latex/biblatex/biblatex.def
                File: biblatex.def 2016/12/05 v3.7 biblatex compatibility (PK/JW/AB)
                \c@textcitecount=\count266
                \c@textcitetotal=\count267
                \c@textcitemaxnames=\count268
                \c@biburlnumpenalty=\count269
                \c@biburlucpenalty=\count270
                \c@biburllcpenalty=\count271
                \c@smartand=\count272
                )
                Package biblatex Info: Trying to load bibliography style 'ieee'...
                Package biblatex Info: ... file 'ieee.bbx' found.

                (/TexLive/texmf-dist/tex/latex/biblatex-ieee/ieee.bbx
                File: ieee.bbx 2017/03/27 v1.2d biblatex bibliography style
                Package biblatex Info: Trying to load bibliography style 'numeric-comp'...
                Package biblatex Info: ... file 'numeric-comp.bbx' found.

                (/TexLive/texmf-dist/tex/latex/biblatex/bbx/numeric-comp.bbx
                File: numeric-comp.bbx 2016/12/05 v3.7 biblatex bibliography style (PK/JW/AB)
                Package biblatex Info: Trying to load bibliography style 'numeric'...
                Package biblatex Info: ... file 'numeric.bbx' found.

                (/TexLive/texmf-dist/tex/latex/biblatex/bbx/numeric.bbx
                File: numeric.bbx 2016/12/05 v3.7 biblatex bibliography style (PK/JW/AB)
                Package biblatex Info: Trying to load bibliography style 'standard'...
                Package biblatex Info: ... file 'standard.bbx' found.

                (/TexLive/texmf-dist/tex/latex/biblatex/bbx/standard.bbx
                File: standard.bbx 2016/12/05 v3.7 biblatex bibliography style (PK/JW/AB)
                \c@bbx:relatedcount=\count273
                \c@bbx:relatedtotal=\count274
                ))))
                Package biblatex Info: Trying to load citation style 'ieee'...
                Package biblatex Info: ... file 'ieee.cbx' found.

                (/TexLive/texmf-dist/tex/latex/biblatex-ieee/ieee.cbx
                File: ieee.cbx 2017/03/27 v1.2d biblatex citation style
                Package biblatex Info: Trying to load citation style 'numeric-comp'...
                Package biblatex Info: ... file 'numeric-comp.cbx' found.

                (/TexLive/texmf-dist/tex/latex/biblatex/cbx/numeric-comp.cbx
                File: numeric-comp.cbx 2016/12/05 v3.7 biblatex citation style (PK/JW/AB)
                \c@cbx@tempcnta=\count275
                \c@cbx@tempcntb=\count276
                Package biblatex Info: Redefining '\cite'.
                Package biblatex Info: Redefining '\parencite'.
                Package biblatex Info: Redefining '\footcite'.
                Package biblatex Info: Redefining '\footcitetext'.
                Package biblatex Info: Redefining '\smartcite'.
                Package biblatex Info: Redefining '\supercite'.
                Package biblatex Info: Redefining '\textcite'.
                Package biblatex Info: Redefining '\textcites'.
                Package biblatex Info: Redefining '\cites'.
                Package biblatex Info: Redefining '\parencites'.
                Package biblatex Info: Redefining '\smartcites'.
                )
                Package biblatex Info: Redefining '\cite'.
                Package biblatex Info: Redefining '\cites'.
                )
                Package biblatex Info: Trying to load configuration file...
                Package biblatex Info: ... file 'biblatex.cfg' found.

                (/TexLive/texmf-dist/tex/latex/biblatex/biblatex.cfg
                File: biblatex.cfg
                ))
                Package biblatex Info: Trying to load language 'spanish'...
                Package biblatex Info: ... file 'spanish.lbx' found.

                (/TexLive/texmf-dist/tex/latex/biblatex/lbx/spanish.lbx
                File: spanish.lbx 2016/12/05 v3.7 biblatex localization (PK/JW/AB)
                )

                Package biblatex Warning: 'babel/polyglossia' detected but 'csquotes' missing.
                (biblatex)                Loading 'csquotes' recommended.

                \@quotelevel=\count277
                \@quotereset=\count278
                (./parent.aux)
                \openout1 = `parent.aux'.

                LaTeX Font Info:    Checking defaults for OML/cmm/m/it on input line 6.
                LaTeX Font Info:    ... okay on input line 6.
                LaTeX Font Info:    Checking defaults for T1/cmr/m/n on input line 6.
                LaTeX Font Info:    ... okay on input line 6.
                LaTeX Font Info:    Checking defaults for OT1/cmr/m/n on input line 6.
                LaTeX Font Info:    ... okay on input line 6.
                LaTeX Font Info:    Checking defaults for OMS/cmsy/m/n on input line 6.
                LaTeX Font Info:    ... okay on input line 6.
                LaTeX Font Info:    Checking defaults for OMX/cmex/m/n on input line 6.
                LaTeX Font Info:    ... okay on input line 6.
                LaTeX Font Info:    Checking defaults for U/cmr/m/n on input line 6.
                LaTeX Font Info:    ... okay on input line 6.
                LaTeX Info: Redefining \sptext on input line 6.
                LaTeX Info: Redefining \. on input line 6.
                LaTeX Info: Redefining \% on input line 6.
                Package biblatex Info: No input encoding detected.
                (biblatex)             Assuming 'ascii'.
                Package biblatex Info: Automatic encoding selection.
                (biblatex)             Assuming data encoding 'ascii'.
                \openout4 = `parent.bcf'.

                Package biblatex Info: Trying to load bibliographic data...
                Package biblatex Info: ... file 'parent.bbl' not found.

                No file parent.bbl.
                Package biblatex Info: Reference section=0 on input line 6.
                Package biblatex Info: Reference segment=0 on input line 6.
                (./parent.aux)

                LaTeX Warning: There were undefined references.

                Package biblatex Warning: Please (re)run Biber on the file:
                (biblatex)                parent
                (biblatex)                and rerun LaTeX afterwards.

                Package logreq Info: Writing requests to 'parent.run.xml'.
                \openout1 = `parent.run.xml'.

                )
                Here is how much of TeX's memory you used:
                7717 strings out of 492995
                133301 string characters out of 6138727
                557258 words of memory out of 5000000
                11248 multiletter control sequences out of 15000+600000
                3640 words of font info for 14 fonts, out of 8000000 for 9000
                1141 hyphenation exceptions out of 8191
                35i,1n,30p,856b,700s stack positions out of 5000i,500n,10000p,200000b,80000s

                No pages of output.
                PDF statistics:
                0 PDF objects out of 1000 (max. 8388607)
                0 named destinations out of 1000 (max. 500000)
                1 words of extra memory for PDF output out of 10000 (max. 10000000)"#,
        };

        assert_eq!(
            parse(&log).errors,
            vec![
                BuildError {
                    relative_path: "./parent.tex".into(),
                    level: BuildErrorLevel::Warning,
                    message: "'babel/polyglossia' detected but 'csquotes' missing. Loading 'csquotes' recommended.".into(),
                    line: None
                },
                BuildError {
                    relative_path: "./parent.tex".into(),
                    level: BuildErrorLevel::Warning,
                    message: "There were undefined references.".into(),
                    line: None,
                },
                BuildError {
                    relative_path: "./parent.tex".into(),
                    level: BuildErrorLevel::Warning,
                    message: "Please (re)run Biber on the file: parent and rerun LaTeX afterwards.".into(),
                    line: None
                }
            ]
        );
    }

    #[test]
    fn test_parse_006() {
        let log = indoc! {
            r#"
                This is pdfTeX, Version 3.14159265-2.6-1.40.18 (TeX Live 2017/W32TeX) (preloaded format=pdflatex 2018.3.30)  26 DEC 2018 16:33
                entering extended mode
                restricted \write18 enabled.
                %&-line parsing enabled.
                **./parent.tex
                (./parent.tex
                LaTeX2e <2017-04-15>
                Babel <3.10> and hyphenation patterns for 84 language(s) loaded.
                (/TexLive/texmf-dist/tex/latex/base/article.cls
                Document Class: article 2014/09/29 v1.4h Standard LaTeX document class
                (/TexLive/texmf-dist/tex/latex/base/size10.clo
                File: size10.clo 2014/09/29 v1.4h Standard LaTeX file (size option)
                )
                \c@part=\count79
                \c@section=\count80
                \c@subsection=\count81
                \c@subsubsection=\count82
                \c@paragraph=\count83
                \c@subparagraph=\count84
                \c@figure=\count85
                \c@table=\count86
                \abovecaptionskip=\skip41
                \belowcaptionskip=\skip42
                \bibindent=\dimen102
                ) (./parent.aux
                (./child.tex.aux))
                \openout1 = `parent.aux'.

                LaTeX Font Info:    Checking defaults for OML/cmm/m/it on input line 3.
                LaTeX Font Info:    ... okay on input line 3.
                LaTeX Font Info:    Checking defaults for T1/cmr/m/n on input line 3.
                LaTeX Font Info:    ... okay on input line 3.
                LaTeX Font Info:    Checking defaults for OT1/cmr/m/n on input line 3.
                LaTeX Font Info:    ... okay on input line 3.
                LaTeX Font Info:    Checking defaults for OMS/cmsy/m/n on input line 3.
                LaTeX Font Info:    ... okay on input line 3.
                LaTeX Font Info:    Checking defaults for OMX/cmex/m/n on input line 3.
                LaTeX Font Info:    ... okay on input line 3.
                LaTeX Font Info:    Checking defaults for U/cmr/m/n on input line 3.
                LaTeX Font Info:    ... okay on input line 3.
                \openout2 = `child.aux'.

                (./child.tex)
                ! Undefined control sequence.
                l.7 \foo

                The control sequence at the end of the top line
                of your error message was never \def'ed. If you have
                misspelled it (e.g., `\hobx'), type `I' and the correct
                spelling (e.g., `I\hbox'). Otherwise just continue,
                and I'll forget about whatever was undefined.

                ! Missing $ inserted.
                <inserted text>
                                $
                l.8 \bar

                I've inserted a begin-math/end-math symbol since I think
                you left one out. Proceed, with fingers crossed.

                LaTeX Font Info:    External font `cmex10' loaded for size
                (Font)              <7> on input line 8.
                LaTeX Font Info:    External font `cmex10' loaded for size
                (Font)              <5> on input line 8.
                ! Undefined control sequence.
                l.9 \baz

                The control sequence at the end of the top line
                of your error message was never \def'ed. If you have
                misspelled it (e.g., `\hobx'), type `I' and the correct
                spelling (e.g., `I\hbox'). Otherwise just continue,
                and I'll forget about whatever was undefined.

                ! Missing { inserted.
                <to be read again>
                                \par
                l.10

                A left brace was mandatory here, so I've put one in.
                You might want to delete and/or insert some corrections
                so that I will find a matching right brace soon.
                (If you're confused by all this, try typing `I}' now.)

                ! Missing $ inserted.
                <inserted text>
                                $
                l.10

                I've inserted a begin-math/end-math symbol since I think
                you left one out. Proceed, with fingers crossed.

                ! Missing } inserted.
                <inserted text>
                                }
                l.10

                I've inserted something that you may have forgotten.
                (See the <inserted text> above.)
                With luck, this will get me unwedged. But if you
                really didn't forget anything, try typing `2' now; then
                my insertion and my current dilemma will both disappear.

                [1

                {/TexLive/texmf-var/fonts/map/pdftex/updmap/pdftex.map}] (./parent.aux
                (./child.aux)) )
                Here is how much of TeX's memory you used:
                212 strings out of 492995
                2238 string characters out of 6138727
                54074 words of memory out of 5000000
                3843 multiletter control sequences out of 15000+600000
                3640 words of font info for 14 fonts, out of 8000000 for 9000
                1141 hyphenation exceptions out of 8191
                23i,4n,17p,116b,107s stack positions out of 5000i,500n,10000p,200000b,80000s
                </TexLive/texmf-dist/fonts/type1/public/amsfonts/cm/cmr10.pfb
                >
                Output written on parent.pdf (1 page, 8329 bytes).
                PDF statistics:
                12 PDF objects out of 1000 (max. 8388607)
                7 compressed objects within 1 object stream
                0 named destinations out of 1000 (max. 500000)
                1 words of extra memory for PDF output out of 10000 (max. 10000000)"#,
        };

        assert_eq!(
            parse(&log).errors,
            vec![
                BuildError {
                    relative_path: "./parent.tex".into(),
                    level: BuildErrorLevel::Error,
                    message: "Undefined control sequence.".into(),
                    line: Some(6)
                },
                BuildError {
                    relative_path: "./parent.tex".into(),
                    level: BuildErrorLevel::Error,
                    message: "Missing $ inserted.".into(),
                    line: Some(7)
                },
                BuildError {
                    relative_path: "./parent.tex".into(),
                    level: BuildErrorLevel::Error,
                    message: "Undefined control sequence.".into(),
                    line: Some(8)
                },
                BuildError {
                    relative_path: "./parent.tex".into(),
                    level: BuildErrorLevel::Error,
                    message: "Missing { inserted.".into(),
                    line: Some(9)
                },
                BuildError {
                    relative_path: "./parent.tex".into(),
                    level: BuildErrorLevel::Error,
                    message: "Missing $ inserted.".into(),
                    line: Some(9)
                },
                BuildError {
                    relative_path: "./parent.tex".into(),
                    level: BuildErrorLevel::Error,
                    message: "Missing } inserted.".into(),
                    line: Some(9)
                },
            ]
        );
    }

    #[test]
    fn test_parse_007() {
        let log = indoc! {
        r#"
            This is pdfTeX, Version 3.141592653-2.6-1.40.22 (TeX Live 2021/W32TeX) (preloaded format=pdflatex 2021.6.19)  5 NOV 2021 19:10
            entering extended mode
            restricted \write18 enabled.
            %&-line parsing enabled.
            **/some/folder/a.tex
            (/some/folder/a.tex
            LaTeX2e <2021-06-01> patch level 1
            L3 programming layer <2021-06-18>
            (/texlive/2021/texmf-dist/tex/latex/koma-script/scrartcl.cls
            Document Class: scrartcl 2021/03/17 v3.33 KOMA-Script document class (article)
            (/texlive/2021/texmf-dist/tex/latex/koma-script/scrkbase.sty
            Package: scrkbase 2021/03/17 v3.33 KOMA-Script package (KOMA-Script-dependent b
            asics and keyval usage)
            
            (/texlive/2021/texmf-dist/tex/latex/koma-script/scrbase.sty
            Package: scrbase 2021/03/17 v3.33 KOMA-Script package (KOMA-Script-independent 
            basics and keyval usage)
            
            (/texlive/2021/texmf-dist/tex/latex/koma-script/scrlfile.sty
            Package: scrlfile 2021/03/17 v3.33 KOMA-Script package (file load hooks)
            
            (/texlive/2021/texmf-dist/tex/latex/koma-script/scrlfile-hook.sty
            Package: scrlfile-hook 2021/03/17 v3.33 KOMA-Script package (using LaTeX hooks)
            
            
            (/texlive/2021/texmf-dist/tex/latex/koma-script/scrlogo.sty
            Package: scrlogo 2021/03/17 v3.33 KOMA-Script package (logo)
            )))
            (/texlive/2021/texmf-dist/tex/latex/graphics/keyval.sty
            Package: keyval 2014/10/28 v1.15 key=value parser (DPC)
            \KV@toks@=\toks16
            )
            Applying: [2021/05/01] Usage of raw option list on input line 252.
            Already applied: [0000/00/00] compatibility for LaTeX before 2021/05/01 on inpu
            t line 337.
            ))
            ==> First Aid for scrkbase.sty no longer applied!
            (/texlive/2021/texmf-dist/tex/latex/koma-script/tocbasic.sty
            Package: tocbasic 2021/03/17 v3.33 KOMA-Script package (handling toc-files)
            \scr@dte@tocline@numberwidth=\skip47
            \scr@dte@tocline@numbox=\box50
            )
            Package tocbasic Info: babel extension for `toc' omitted
            (tocbasic)             because of missing \bbl@set@language on input line 135.
            Class scrartcl Info: File `scrsize11pt.clo' used instead of
            (scrartcl)           file `scrsize11.clo' to setup font sizes on input line 223
            9.
            
            (/texlive/2021/texmf-dist/tex/latex/koma-script/scrsize11pt.clo
            File: scrsize11pt.clo 2021/03/17 v3.33 KOMA-Script font size class option (11pt
            )
            )
            (/texlive/2021/texmf-dist/tex/latex/koma-script/typearea.sty
            Package: typearea 2021/03/17 v3.33 KOMA-Script package (type area)
            \ta@bcor=\skip48
            \ta@div=\count182
            \ta@hblk=\skip49
            \ta@vblk=\skip50
            \ta@temp=\skip51
            \footheight=\skip52
            Package typearea Info: These are the values describing the layout:
            (typearea)             DIV  = 10
            (typearea)             BCOR = 0.0pt
            (typearea)             \paperwidth      = 597.50793pt
            (typearea)              \textwidth      = 418.25555pt
            (typearea)              DIV departure   = -6%
            (typearea)              \evensidemargin = 17.3562pt
            (typearea)              \oddsidemargin  = 17.3562pt
            (typearea)             \paperheight     = 845.04694pt
            (typearea)              \textheight     = 595.80026pt
            (typearea)              \topmargin      = -25.16531pt
            (typearea)              \headheight     = 17.0pt
            (typearea)              \headsep        = 20.40001pt
            (typearea)              \topskip        = 11.0pt
            (typearea)              \footskip       = 47.6pt
            (typearea)              \baselineskip   = 13.6pt
            (typearea)              on input line 1741.
            )
            \c@part=\count183
            \c@section=\count184
            \c@subsection=\count185
            \c@subsubsection=\count186
            \c@paragraph=\count187
            \c@subparagraph=\count188
            \scr@dte@section@maxnumwidth=\skip53
            Class scrartcl Info: using compatibility default `runin=bysign'
            (scrartcl)           for `\section on input line 4846.
            Class scrartcl Info: using compatibility default `afterindent=bysign'
            (scrartcl)           for `\section on input line 4846.
            \scr@dte@part@maxnumwidth=\skip54
            Class scrartcl Info: using compatibility default `afterindent=false'
            (scrartcl)           for `\part on input line 4854.
            \scr@dte@subsection@maxnumwidth=\skip55
            Class scrartcl Info: using compatibility default `runin=bysign'
            (scrartcl)           for `\subsection on input line 4864.
            Class scrartcl Info: using compatibility default `afterindent=bysign'
            (scrartcl)           for `\subsection on input line 4864.
            \scr@dte@subsubsection@maxnumwidth=\skip56
            Class scrartcl Info: using compatibility default `runin=bysign'
            (scrartcl)           for `\subsubsection on input line 4874.
            Class scrartcl Info: using compatibility default `afterindent=bysign'
            (scrartcl)           for `\subsubsection on input line 4874.
            \scr@dte@paragraph@maxnumwidth=\skip57
            Class scrartcl Info: using compatibility default `runin=bysign'
            (scrartcl)           for `\paragraph on input line 4885.
            Class scrartcl Info: using compatibility default `afterindent=bysign'
            (scrartcl)           for `\paragraph on input line 4885.
            \scr@dte@subparagraph@maxnumwidth=\skip58
            Class scrartcl Info: using compatibility default `runin=bysign'
            (scrartcl)           for `\subparagraph on input line 4895.
            Class scrartcl Info: using compatibility default `afterindent=bysign'
            (scrartcl)           for `\subparagraph on input line 4895.
            \abovecaptionskip=\skip59
            \belowcaptionskip=\skip60
            \c@pti@nb@sid@b@x=\box51
            Package tocbasic Info: babel extension for `lof' omitted
            (tocbasic)             because of missing \bbl@set@language on input line 6127.
            
            \scr@dte@figure@maxnumwidth=\skip61
            \c@figure=\count189
            Package tocbasic Info: babel extension for `lot' omitted
            (tocbasic)             because of missing \bbl@set@language on input line 6139.
            
            \scr@dte@table@maxnumwidth=\skip62
            \c@table=\count190
            Class scrartcl Info: Redefining `\numberline' on input line 6303.
            \bibindent=\dimen138
            )
            (/texlive/2021/texmf-dist/tex/latex/l3backend/l3backend-pdftex.def
            File: l3backend-pdftex.def 2021-05-07 L3 backend support: PDF output (pdfTeX)
            \l__color_backend_stack_int=\count191
            \l__pdf_internal_box=\box52
            ) (./a.aux)
            \openout1 = `a.aux'.
            
            LaTeX Font Info:    Checking defaults for OML/cmm/m/it on input line 3.
            LaTeX Font Info:    ... okay on input line 3.
            LaTeX Font Info:    Checking defaults for OMS/cmsy/m/n on input line 3.
            LaTeX Font Info:    ... okay on input line 3.
            LaTeX Font Info:    Checking defaults for OT1/cmr/m/n on input line 3.
            LaTeX Font Info:    ... okay on input line 3.
            LaTeX Font Info:    Checking defaults for T1/cmr/m/n on input line 3.
            LaTeX Font Info:    ... okay on input line 3.
            LaTeX Font Info:    Checking defaults for TS1/cmr/m/n on input line 3.
            LaTeX Font Info:    ... okay on input line 3.
            LaTeX Font Info:    Checking defaults for OMX/cmex/m/n on input line 3.
            LaTeX Font Info:    ... okay on input line 3.
            LaTeX Font Info:    Checking defaults for U/cmr/m/n on input line 3.
            LaTeX Font Info:    ... okay on input line 3.
            Package scrbase Info: activating english \contentsname on input line 3.
            Package scrbase Info: activating english \listfigurename on input line 3.
            Package scrbase Info: activating english \listtablename on input line 3.
            ! Undefined control sequence.
            l.4     \lsdkfjlskdfj
                                
            The control sequence at the end of the top line
            of your error message was never \def'ed. If you have
            misspelled it (e.g., `\hobx'), type `I' and the correct
            spelling (e.g., `I\hbox'). Otherwise just continue,
            and I'll forget about whatever was undefined.
            
            (./a.aux) ) 
            Here is how much of TeX's memory you used:
            3199 strings out of 478510
            74549 string characters out of 5853586
            510929 words of memory out of 5000000
            21227 multiletter control sequences out of 15000+600000
            403730 words of font info for 28 fonts, out of 8000000 for 9000
            1141 hyphenation exceptions out of 8191
            108i,1n,108p,10625b,270s stack positions out of 5000i,500n,10000p,200000b,80000s
            
            No pages of output.
            PDF statistics:
            0 PDF objects out of 1000 (max. 8388607)
            0 named destinations out of 1000 (max. 500000)
            1 words of extra memory for PDF output out of 10000 (max. 10000000)"#,
        };

        assert_debug_snapshot!(parse(&log).errors);
    }
}