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authorKarl Berry <karl@freefriends.org>2021-12-16 21:25:06 +0000
committerKarl Berry <karl@freefriends.org>2021-12-16 21:25:06 +0000
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tree406fda5234b923567652225efec91e7aa1be6096 /Master/texmf-dist/doc/support
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texlogsieve (16dec21)
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+ GNU GENERAL PUBLIC LICENSE
+ Version 3, 29 June 2007
+
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+ 15. Disclaimer of Warranty.
+
+ THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+ 16. Limitation of Liability.
+
+ IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+ 17. Interpretation of Sections 15 and 16.
+
+ If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+ <program> Copyright (C) <year> <name of author>
+ This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
diff --git a/Master/texmf-dist/doc/support/texlogsieve/README.md b/Master/texmf-dist/doc/support/texlogsieve/README.md
new file mode 100644
index 00000000000..acc3204d907
--- /dev/null
+++ b/Master/texmf-dist/doc/support/texlogsieve/README.md
@@ -0,0 +1,143 @@
+# texlogsieve - (yet another program to) filter and summarize LaTeX log files
+
+`texlogsieve` reads a LaTeX log file (or the standard input if no file is
+specified), filters out less relevant messages, and displays a summary
+report. It is a `texlua` script, similar in spirit to tools such as
+`texfot`, `texloganalyser`, `rubber-info`, `textlog_extract`,
+`texlogparser`, and others. Highlights:
+
+* Two reports: the most important messages from the log file followed by
+ a summary of repeated messages, undefined references etc.;
+
+* The program goes to great lengths to correctly handle TeX line wrapping
+ and does a much better job at that than existing tools;
+
+* Multiline messages are treated as a single entity;
+
+* Several options to control which messages should be filtered out;
+
+* No messages are accidentally removed;
+
+* The summary report is currently simple, but useful.
+
+`texlogsieve` **must** be run from the same directory as `[pdf|lua|xe]latex`,
+because it searches for the files used during compilation (packages loaded
+from the current directory, files included with `\input` etc.).
+
+The defaults are reasonable; hopefully, you can just do
+
+```
+[pdf|lua|xe]latex myfile.tex | texlogsieve
+```
+
+and be satisfied with the result.
+
+Since it needs to know what messages to expect, `texlogsieve` is
+currently geared towards LaTeX; I have no idea how it would work with
+ConTeXt or plain TeX. Still, adding support to them should not be
+too difficult.
+
+If you want to know more about the TeX log file and the workings of
+the program, check the initial comments in the code.
+
+## Short-term improvements
+
+ * Create tests
+
+ - Synthetic unit tests: these should systematically test the code and the
+ features it implements with small "fake" log files
+
+ - Real-world files (for example, the docs for some packages or some papers
+ from arXiv): these should help us detect important log messages and
+ changes in messages whenever new versions of LaTeX and its packages are
+ released
+
+ * Include the line number in the summary for messages that have it
+
+ * Consider messages that only differ by "on line XXX" to be repetitions
+
+ * Implement option `--collapse-lines` (show multiline messages as a single
+ line)
+
+ * Implement option `--no-redundant` (makes messages that are going to be
+ summarized, such as `undefined reference blah`, not appear in the filtered
+ report, only in the summary)
+
+## Other improvements
+
+ * Improve the final summary format - we should look at other tools for
+ inspiration
+
+ * Filter the summary report too; look at `texloganalyser` for inspiration
+
+ * Consider indicating filenames more prominently in the filtered report;
+ something like
+
+ Messages for file ./somefile.tex:
+ LaTeX Warning: File `blah.txt' already exists on the system.
+ Messages for file ./someotherfile.tex:
+ Warning: Missing character: There is no " (U+0022) in font...
+ but only when there is actually something to report for the given file
+
+ * Do something smart about LaTeX errors (maybe just detecting them and saying
+ "there was an error here" is enough) - maybe get some inspiration from
+ <https://github.com/overleaf/latex-log-parser> (the parser from overleaf).
+ This can get complicated if we account for the possibility that the user
+ interactively solved whatever was the problem, but do we really want to or
+ need to handle that?
+
+ * Add colors (see `texlog_extract`)
+
+ * Improve error handling if/where possible
+
+ * Better aggregation in the summary:
+
+ - `under/overfull boxes: p.5 (chap1.tex, L27); p.7 (chap2.tex, L37); p.19
+ (chap2.tex, L176)`
+
+ - `missing characters X, Y, Z in font blah`
+
+ * Try to figure out a way to automatically extract possible messages from
+ LaTeX packages
+
+ * Stuff like
+ `LaTeX Warning: Label(s) may have changed. Rerun to get cross-references right`
+ should trigger a specific "please rerun" message in the summary
+
+ * Maybe grep the .fls file first before trying to do `kpse.find_file()`; this
+ is probably more reliable and works even if the environment has changed,
+ but can we be sure it works correctly when reading the logfile from a pipe?
+
+## Refactorings to consider:
+
+ * Modify `heartbeat` to use `os.difftime()`
+
+ * Improve Lines:
+
+ - Eliminate `Lines.current` and instead always use `Lines.get(0)`,
+ `Lines.get(1)` etc. We might store stuff in indexes 1, 2, 3 etc. and
+ make something like `Lines:get(val) => return Lines[val +1]` (this is
+ better than actually using index 0 because the lua standard library
+ counts from one, so adhering to this convention makes using it easier)
+
+ - Reimplement the logic using <https://www.lua.org/pil/11.4.html> for a
+ small performance increase
+
+---
+
+Code etc: <https://gitlab.com/lago/texlogsieve>
+
+Copyright 2021 Nelson Lago <lago@ime.usp.br>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <https://www.gnu.org/licenses/>.
diff --git a/Master/texmf-dist/doc/support/texlogsieve/texlogsieve.pdf b/Master/texmf-dist/doc/support/texlogsieve/texlogsieve.pdf
new file mode 100644
index 00000000000..80c47a30378
--- /dev/null
+++ b/Master/texmf-dist/doc/support/texlogsieve/texlogsieve.pdf
Binary files differ
diff --git a/Master/texmf-dist/doc/support/texlogsieve/texlogsieve.tex b/Master/texmf-dist/doc/support/texlogsieve/texlogsieve.tex
new file mode 100644
index 00000000000..4d29abf8cc5
--- /dev/null
+++ b/Master/texmf-dist/doc/support/texlogsieve/texlogsieve.tex
@@ -0,0 +1,312 @@
+% texlogsieve - filter and summarize LaTeX log files
+%
+% Copyright (C) 2021 Nelson Lago <lago@ime.usp.br>
+%
+% This program is free software: you can redistribute it and/or modify
+% it under the terms of the GNU General Public License as published by
+% the Free Software Foundation, either version 3 of the License, or
+% (at your option) any later version.
+%
+% This program is distributed in the hope that it will be useful,
+% but WITHOUT ANY WARRANTY; without even the implied warranty of
+% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+% GNU General Public License for more details.
+%
+% You should have received a copy of the GNU General Public License
+% along with this program. If not, see <https://www.gnu.org/licenses/>.
+%
+% Code etc: https://gitlab.com/lago/texlogsieve
+
+\documentclass{ltxdoc}
+
+\usepackage[hyperref,svgnames,x11names,table]{xcolor}
+\usepackage{url}
+\urlstyle{sf}
+\usepackage{hyperref}
+\hypersetup{
+ colorlinks=true,
+ citecolor=DarkGreen,
+ linkcolor=NavyBlue,
+ urlcolor=DarkRed,
+ filecolor=green,
+ anchorcolor=black,
+}
+
+\usepackage{libertinus}
+\usepackage[scale=.85]{sourcecodepro}
+
+\RecordChanges
+
+\changes{v1.0.0-beta-1}{2021/12/16}{first public prerelease}
+
+\begin{document}
+
+\title{\textsf{texlogsieve}:\thanks{This document
+corresponds to \textsf{texlogsieve}~1.0.0-beta-1,
+dated~2021-12-16.}\\[.3\baselineskip]
+{\normalsize(yet another program to)\\[-.6\baselineskip]}
+{\large filter and summarize \LaTeX\ log files}
+}
+
+\author{
+Nelson Lago\\
+\texttt{lago@ime.usp.br}\\
+~\\
+\url{https://gitlab.com/lago/texlogsieve}
+}
+
+\maketitle
+
+\begin{abstract}
+
+\texttt{texlogsieve} reads a \LaTeX\ log file (or the standard input if
+no file is specified), filters out less relevant messages, and displays
+a summary report. Highlights:
+
+\begin{itemize}
+ \item Two reports: the most important messages from the log file
+ followed by a summary of repeated messages, undefined
+ references etc.;
+ \item The program goes to great lengths to correctly handle \TeX\ line
+ wrapping and does a much better job at that than existing tools;
+ \item Multiline messages are treated as a single entity;
+ \item Several options to control which messages should be filtered out;
+ \item No messages are accidentally removed;
+ \item The summary report is currently simple, but useful.
+\end{itemize}
+
+\end{abstract}
+
+\section{Introduction}
+
+The \LaTeX\ log file is very verbose, which is useful when debugging but
+a hindrance during document preparation, as warnings such as ``missing
+character'', ``undefined reference'', and others become buried among lots
+of less relevant messages. This program filters out such less relevant
+messages and outputs the rest, together with a final summary for the
+specially important ones. It is a \texttt{texlua} script, similar in
+spirit to tools such as \texttt{texfot}, \texttt{texloganalyser},
+\texttt{rubber-info}, \texttt{textlog\_extract}, \texttt{texlogparser},
+and others. Note that it does not try to do anything smart about error
+messages (at least for now); if there is an error, you probably want to
+take a look directly at the log file anyway.
+
+\texttt{texlogsieve} \textbf{must} be run from the same directory as
+\verb/[pdf|lua|xe]latex/, because it searches for the files used during
+compilation (packages loaded from the current directory, files included
+with \verb|\input| etc.).
+
+\pagebreak[1]
+The defaults are reasonable; hopefully, you can just do
+
+\begin{quote}
+\verb/[pdf|lua|xe]latex myfile.tex | texlogsieve/
+\end{quote}
+
+and be satisfied with the result.
+
+Since it needs to know what messages to expect, \texttt{texlogsieve} is
+currently geared towards \LaTeX; I have no idea how it would work with
+Con\TeX{}t or plain \TeX. Still, adding support to them should not be
+too difficult.
+
+If you want to know more about the \TeX\ log file and the workings of the
+program, check the initial comments in the code.
+
+\section{Unwrapping long lines}
+
+\TeX\ wraps (breaks) lines longer than \texttt{max\_print\_line} (by
+default, 79 characters). Most tools detect lines that are exactly 79
+characters long and treat the next line as a continuation, but that fails
+in quite a few cases (check the comments in the \texttt{texlogsieve} code
+for a discussion on that). So, if at all possible, it is a very good idea
+to set \texttt{max\_print\_line} to a really large value (such as 100,000),
+effectively disabling line wrapping. It was useful in the 1980s, but not
+anymore (your terminal or editor wraps automatically).
+
+Still, \texttt{texlogsieve} goes to great lengths to correctly handle
+\TeX{} line wrapping and does a pretty good job at that. It understands
+the \texttt{max\_print\_line} \TeX{} configuration variable and reads its
+value from the same places as \TeX. Setting \texttt{max\_print\_line} to
+a value larger than 9999 makes \texttt{texlogsieve} ignore line wrapping.
+
+\section{Options}
+
+\begin{description}
+\item[\texttt{-\/-page-delay}, \texttt{-\/-no-page-delay}]~\\
+Enable/disable grouping messages by page before display. When enabled, messages
+are only output after the current page is finished (shipout). The advantage is
+that the page number is included in the message (default enabled).
+\end{description}
+
+\begin{description}
+\item[\texttt{-\/-summary}, \texttt{-\/-no-summary}]~\\
+Enable/disable final summary (default enabled).
+\end{description}
+
+\begin{description}
+\item[\texttt{-\/-only-summary}]~\\
+No messages, show only the final summary (default disabled).
+\end{description}
+
+\begin{description}
+\item[\texttt{-\/-shipouts}, \texttt{-\/-no-shipouts}]~\\
+Enable/disable reporting shipouts (default disabled with page-delay, enabled
+with no-page-delay).
+\end{description}
+
+\begin{description}
+\item[\texttt{-\/-repetitions}, \texttt{-\/-no-repetitions}]~\\
+Allow/prevent repeated messages (default disabled, i.e., repeated messages
+are supressed).
+\end{description}
+
+\begin{description}
+\item[\texttt{-\/-heartbeat}, \texttt{-\/-no-heartbeat}]~\\
+Enable/disable progress gauge in page-delay mode (default enabled).
+\end{description}
+
+\begin{description}
+\item[\texttt{-l LEVEL}, \texttt{-\/-minlevel=LEVEL}]~\\
+Filter out messages with severity level lower than \texttt{LEVEL}. Valid
+levels are \texttt{DEBUG} (no filtering), \texttt{INFO}, \texttt{WARNING},
+\texttt{CRITICAL}, and \texttt{UNKNOWN} (default \texttt{WARNING}).
+\end{description}
+
+\begin{description}
+\item[\texttt{-u}, \texttt{-\/-unwrap-only}]~\\
+Do not filter messages and do not output the summary, only unwrap long,
+wrapped lines. The output should be very similar (but not equal) to the
+input file, but with wrapped lines reconstructed. This activates \texttt{-l
+debug}, \texttt{-\/-no-summary}, \texttt{-\/-no-page-delay},
+\texttt{-\/-repetitions}, and \texttt{-\/-shipouts}, and also supresses the
+verbose ``open/close file'' and ``shipout'' messages, simulating instead
+the \TeX{} format, with parens and square brackets. This is useful if you
+prefer the reports generated by some other tool but want to benefit from
+texlogsieve's line unwrapping algorithm; the output generated by this option
+should be parseable by other tools (but you probably need to coerce the other
+tool not to try to unwrap lines).
+\end{description}
+
+\begin{description}
+\item[\texttt{-\/-silence-package=PKGNAME}]~\\
+Filter out messages that can be identified as coming from the given package.
+Use this option multiple times to suppress messages from several different
+packages.
+\end{description}
+
+\begin{description}
+\item[\texttt{-\/-silence-string=EXCERPT OF UNWANTED MESSAGE}]~\\
+Filter out messages that contain the given string (you only need to provide
+part of the message text for the whole message to be suppressed). Use this
+option multiple times to suppress several different messages. The string
+should be a single line, but that is not a problem for multiline log
+messages: space characters in the provided string match any sequence of
+whitespace characters in the message, including newlines. If needed, you
+may precede the string with ``////'', in which case you can use lua-style
+pattern matching (\url{https://www.lua.org/pil/20.2.html}). Note that the
+string is used verbatim: you need not (and should not) enclose it in quotes
+nor escape special characters such as ``\textbackslash''.
+\end{description}
+
+\begin{description}
+\item[\texttt{-\/-silence-file=FILENAME OR FILE GLOB}]~\\
+Filter out messages that have been generated while the given file was being
+processed. Do \textbf{not} use absolute or relative paths, only filenames.
+Simple file globs, such as ``\texttt{*.cls}'', work as expected. Use this
+option multiple times to suppress messages from several different files.
+\end{description}
+
+\begin{description}
+\item[\texttt{-\/-semisilence-file=FILENAME OR FILE GLOB}]~\\
+Just like the previous option, but non-recursive. This means that messages
+generated while the given file was being processed are excluded, but messages
+generated by some other file that was opened by it are not. For example,
+if ``\texttt{chapters.tex}'' includes (with \textbackslash input) the
+files ``\texttt{chapter1.tex}'' and ``\texttt{chapter2.tex}'', using
+``\texttt{-\/-silence-file=chapters.tex}'' will prevent messages generated
+by any of the three files from being displayed. If, however, you use
+``\texttt{-\/-semisilence-file=chapters.tex}'', messages generated by
+\texttt{chapters.tex} will be suppressed, but messages generated by
+\texttt{chapter1.tex} or \texttt{chapter2.tex} will not.
+\end{description}
+
+\begin{description}
+\item[\texttt{-\/-add-[debug\textbar info\textbar warning]-message=MESSAGE}]~\\
+Add \texttt{MESSAGE} to the list of messages known to the program with the given
+severity level; see Section \ref{unrecognized} below for more information
+about this. Like \texttt{-\/-silence-string}, these should be a single line;
+unlike \texttt{-\/-silence-string}, you need to embed \verb|\n| explicitly
+to indicate line breaks. You may precede the string with ``////'' to use
+lua-style pattern matching, but embedding \verb|\n| to indicate line breaks
+is unavoidable. Use these options multiple times to add many different
+messages.
+\end{description}
+
+\begin{description}
+\item[\texttt{-c CFGFILE}, \texttt{-\/-config-file=CFGFILE}]~\\
+Read options from the given configuration file. Options are exactly the
+same as the long command-line options, but without the preceding ``-\/-''
+characters. Lines starting with a ``\#'' sign are comments. An example
+configuration file:
+
+\begin{quote}
+\begin{verbatim}
+no-page-delay
+# no-page-delay enables shipouts, but we do not want that
+no-shipouts
+silence-string = Hyperreferences in rotated content will be misplaced
+# no need to escape the "\" (or any other) character
+silence-string = Using \overbracket and \underbracket from `mathtools'
+# silence a string using lua pattern matching
+silence-string = ////luaotfload | aux : font no %d+ %(.-%)
+silence-files = *.cls
+\end{verbatim}
+\end{quote}
+\end{description}
+
+\begin{description}
+\item[\texttt{-h}, \texttt{-\/-help}]
+Show concise options description.
+\end{description}
+
+\begin{description}
+\item[\texttt{-\/-version}]
+Print program version.
+\end{description}
+
+\section{Unrecognized Messages}
+\label{unrecognized}
+
+\texttt{texlogsieve} automatically handles messages such as ``Package blah
+Info:\dots'' or ``LaTeX Warning:\dots''. However, many messages do not
+follow this pattern. To do its thing, \texttt{texlogsieve} should know about
+these other messages beforehand. This is important for three reasons:
+
+\begin{enumerate}
+ \item Unknown messages are given maximum priority; if you do not want to
+ see them, you have to use -\/-silence-string;
+ \item If the message has more than one line, each line is treated as an
+ independent message. This means you need to use -\/-silence-string
+ multiple times;
+ \item In some rare cases, the line unwrapping algorithm may fail near an
+ unrecognized message.
+\end{enumerate}
+
+While \texttt{texlogsieve} recognizes quite a few messages out of the box,
+you may run into a message generated by some package that it does not know
+about (you can check for this using \texttt{-l unknown}). If that is the
+case, you can use the \verb/--add-[debug|info|warning]-message/ options to
+add it to the list of messages known to the program.
+
+\section{License}
+
+Copyright © 2021 Nelson Lago \textless lago@ime.usp.br\textgreater\\
+License GPLv3+: GNU GPL version 3 or later
+\url{https://gnu.org/licenses/gpl.html}.\\
+This is free software: you are free to change and redistribute it.\\
+There is NO WARRANTY, to the extent permitted by law.
+
+\PrintChanges
+
+\end{document}