From a540e256be85df29c60ac323d4460c6cde1d9350 Mon Sep 17 00:00:00 2001 From: Karl Berry Date: Tue, 3 Jan 2006 00:00:18 +0000 Subject: trunk/Master/texmf/doc git-svn-id: svn://tug.org/texlive/trunk@42 c570f23f-e606-0410-a88d-b1316a301751 --- Master/texmf/doc/chktex/ChkTeX.html | 4263 +++++++++++++++++++++++++++++++++++ Master/texmf/doc/chktex/ChkTeX.pdf | Bin 0 -> 201168 bytes 2 files changed, 4263 insertions(+) create mode 100644 Master/texmf/doc/chktex/ChkTeX.html create mode 100644 Master/texmf/doc/chktex/ChkTeX.pdf (limited to 'Master/texmf/doc/chktex') diff --git a/Master/texmf/doc/chktex/ChkTeX.html b/Master/texmf/doc/chktex/ChkTeX.html new file mode 100644 index 00000000000..1bd0b8fdae4 --- /dev/null +++ b/Master/texmf/doc/chktex/ChkTeX.html @@ -0,0 +1,4263 @@ + + +ChkTeX v1.6.1 + + + + + + + + +
+ + +

ChkTEX v1.6.1

+
Jens T. Berger Thielemann
+
+
October 26, 2004
+
+

1 Introduction

+

This program has been written in frustration because some constructs in LATEX are +sometimes non-intuitive, and easy to forget. It is not a replacement for the built-in +checker in LATEX; however it catches some typographic errors LATEX oversees. In +other words, it is Lint for LATEX. Filters are also provided for checking the +LATEX parts of CWEB documents. +

It is written in ANSI C and compiles silently under GCC using “-Wall -ansi +-pedantic” and almost all warning flags. This means that you can compile & use the +program on your favorite machine. Full source included. +

The program also supports output formats suitable for further processing by editors +or other programs, making errors easy to cycle through. Software is provided for +beautifully interfacing against the AUC-TEX Emacs mode, CygnusED, GoldEd and +various Amiga message browsers. +

The program itself does not have any machine requirements; Amiga, MSDOS and +OS/2 binaries are available. Of course, you’ll need ARexx and ScMsg or VBrowse to +benefit from the ARexx scripts. +

+

2 Features

+

ChkTEX begins to get quite a few bells & whistles now. However, you should be aware +of that in most cases, all this is transparent to the user. As you will see, ChkTEX offers +the ability to adapt to many environments and configurations. +

+

2.1 New features

+

Modifications and additions since v1.6: +

+ +

Modifications and additions since v1.5: +

+

Modifications and additions since v1.4: +

+

2.1.1 Program
+

Modifications to the executable itself: +

+

+

2.1.2 Resource file
+

New concepts introduced in the setup file: +

+

+

2.1.3 Other
+

Various other stuff I’ve done to the product: +

+

+

2.2 Feature list

+ +

Still, it is important to realize that the output from ChkTEX is only intended as a guide +to fixing faults. However, it is by no means always correct. This means that correct +LATEX code may produce errors in ChkTEX, and vice versa: Incorrect LATEX code +may pass silently through. +

+

3 Legal stuff

+

ChkTEX, documentation, installations scripts, CWEB filters and other materials +provided are copyright © 1995-96 Jens T. Berger Thielemann, unless explicitly stated +otherwise. +

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 2 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, write to: +

+

The Free Software Foundation, Inc. +
675 Mass Ave +
Cambridge +
MA 02139 +
USA

+

+

3.1 Registration

+

‘ChkTEX’ is made available under the concept of Gift-Ware, which is a variant of +Share-Ware. Share-Ware software authors often release ‘crippled’ versions of their +products, i.e. these programs do not support the same functionality as the registered +versions you get when sending monetary contributions to the authors. It all comes down +to ‘pay for the software you are using’ in Share-Ware terms. With Gift-Ware registration +it is different, you are not required to contribute money, but a gift will do. With +‘ChkTEX’ you always get a fully functional program, there is no ‘crippled’ test release +which you can try for a limited time and then have to pay for in order to receive the +working registered version. +

It may seem as if ‘ChkTEX’ was free, but this is not the case. Although +there is no need to pay the author in order to get a fully functional version of +the program you should consider making a contribution. You don’t need to +feel guilty if you cannot or do not want to give me something in return for +the work I have put into ‘ChkTEX’. Show me that it was worth spending so +much time listening to users, updating, rewriting and enhancing this program. +Your contributions will provide the motivation for me to keep developing the +program. + +

Send your contribution to the following address: +

+

Jens Berger +
Spektrumvn. 4 +
N-0666 Oslo +
Norway

+

+

4 Installation

+

A few words on installation on various platforms: +

+

+Amiga:
Use the supplied Installer script. +
+MS-DOS & OS/2:
Copy the binary (“ChkTeX.exe”) to somewhere in your path, + and place the “chktexrc” file in the same directory. +

If you’re running Emacs, you may wish to copy the file “chktex.el” to + your elisp source directory, and add the following line to your “.emacs” + file: + +
+ (require 'chktex) +
+
+

+

+UNIX:
Type “configure”, “make” and finally “make install”. To make sure + everything proceeded correctly, type “make check”. If you don’t have superuser + privileges and thus access to the default system areas, you should type + “configure --help” to help you set up correct paths. +

If you haven’t installed any software like this before, that is distributed in source + form, here are some guidelines to help you install it locally at your account. Please + note that a mail to the system administrator may be less work for you. + :-) +

We assume that you have put the archive (“chktex.tar.gz”) in a subdir of yours, + with path “~/tmp”. We further assume that your shell is “csh” or “tcsh”. Do the + following: +

+

    +
  1. First of all, unpack the archive contents. + +
    + > cd ~/tmp +  
    > gunzip chktex.tar.gz +  
    > tar xf chktex.tar +
    +
    +

    +

  2. +
  3. Now, we can configure the program. There are some configuration options you + should know about: +
    + --enable-emacs-hack”:
    Install a small file which adds ChkTEX to + the command menu of AUC-TEX. This is to be considered as a hack, + and may break in future versions of AUC-TEX. It works fine under + AUC-TEX v2.9, though. +

    This option needs the path of your elisp directory as argument, e.g. + “--enable-emacs-hack=/home/myself/elisp” or similar. +

    You’ll also have to add the following line to your “.emacs” file: + +
    + (require 'chktex) +
    +
    +

    You can now access ChkTEX from the “Command” menu in AUC-TEX. To + cycle through the messages, type C-x `. +

    + --enable-lacheck-replace
    This enables a quick hack for making the + AUC-TEX Emacs mode use ChkTEX instead of lacheck. This is done by + installing a stub script which “overrides” the original lacheck + executable. +

    While more stable than the previous solution, this is also significantly + less elegant -- in computing terms, this is the “brute force” + approach. +

    + --enable-debug-info
    ChkTEX has an ability to spit out various + diagnostic messages using the “-d” flag. This behaviour is on by default. + By adding the flag “--disable-debug-info” to the commandline, this + will not be compiled in. +

    This may be useful if you’re running short of disk space (the time savings + are neglible).

    +

    If you are installing the program on your local account, use the following + command: + +
    + > configure --prefix ~/ +
    +
    +

    +

    Add eventual extra flags as specified above. This command will generate a + significant amount of output, this can usually be ignored. +

  4. +
  5. Finally, we can just build the program and install it. + +
    + > make +  
    > make install +
    +
    +

    +

  6. +
  7. Finished! The program is now installed and ready to use. You may now + tell other people to put your bindir in their path in order to benefit + from your work. All that remains is to make the shell aware of your + installation. + +
    + > rehash +
    +
    +

    +

    To make the remaining parts of your system aware of this, you’ll have to log + out and re-log in, I’m afraid. However, you should delay this until you’ve + completed this installation procedure. +

  8. +
  9. If you wish to make sure that everything is OK (you ought to), you may now + ask ChkTEX to do a self-test: + +
    + > make check +
    +
    +

    +

+
+Other platforms:
First of all, you have to copy the “config.h.in” file to a file + named “config.h”. Then, edit it to reflect your system. Do the same + with “OpSys.h” (this file has been reduced significantly). If you wish, you + may define “DATADIR” to the path you want the global resource file to be + put. +

Now, I would suggest that you take a peak at the “OpSys.c” file, and edit it + appropiately, for more comfort. This should not be necessary, though, at least not + the first time. +

Finally, you may now compile and link all .c files. Define “HAVE_CONFIG_H” to 1 + (on the command-line, for instance). If the “config.h” you wish to use has + another name, define “CONFIG_H_NAME” to that (in that case, don’t define + “HAVE_CONFIG_H”). +

Put the directory path of the “chktexrc” file in a environment variable named + “CHKTEXRC”. The files “deweb.in” and “chkweb” should be moved to a directory in + your path. These files may need further setup, as they haven’t got the location of + perl initialized. +

If your compiler/the compiled program complains (or crashes!), you may try the + hints listed below. Please note that it only makes sense to try these hints if your + compiler fails to produce a working program. +

+

    +
  1. Increase the preprocessor buffers and line buffers. The ChkTEX sources + define macros sized 3-4k (expanding to about the same), and passes + arguments sized about 1k. +
  2. +
  3. Use the magic switch which lets us use large “switch(...){...}” + statements; some of these statements have about 120 “case” entries. +
  4. +
  5. The sources require that at least the first 12 of each identifier is + significant.
+
+

Note: You must install the new “chktexrc” file; ChkTEX will fail to function +unless! +

After doing this, you may enhance ChkTEX’ behaviour by reading/editing the +“chktexrc” file. +

+

5 Usage

+ +

+

5.1 ChkTEX

+

Amiga v2.04+ users may wish to note that you may pass the files that ChkTEX is to +process by shift-clicking them. In addition, you may specify the arguments as tooltypes to +the main program icon, using the Info menu option. For instance, if you wish to make the +‘fancy’ output the default when starting from Workbench, enter the following as a +tooltype: + +
+Verbosity=2 +
+
+

We use the WB2Argv package (also developed by me, available on Aminet as +“dev/c/WB2Argv.lha”), and will fold case until the “=” character, in tradition with the +case-insensitivity of Amiga OS. In all other respects (and platforms), the options listed +below are case-sensitive. +

+

5.1.1 Synopsis
+

A UNIX-compliant template format follows: + +
chktex

[-hiqrW] + [-v[0-...]] + [-l <rcfile>] + [-[wemn] <[1-42]|all>] + [-d[0-...]] + [-p <pseudoname>] + [-o <outputfile>] + [-[btxgI][0|1]] + file1 + file2 + ...

+

+

5.1.2 Options
+

These are the options ChkTEX currently accepts. Please note that single-lettered +options requiring a numerical or no argument may be concatenated. E.g. saying +“-v0qb0w2” is the same as saying “-v0 -q -b0 -w2”, except for being less to +type. +

Enough general talk; here’s a rather detailed description of all options: +

+Misc. options:
General options which aren’t related to some specific subpart of + ChkTEX. +
+ -h [--help]
Gives you a command summary. +
+ -i [--license]
Shows distribution information. +
+ -l [--localrc]
Reads a resource-file formatted as the global resource-file + “chktexrc”, in addition to the global resource-file. This option needs the + name of the resource-file as a parameter. See also -g. +
+ -r [--reset]
This will reset all settings to their defaults. This may be useful + if you use the CMDLINE directive in your “chktexrc” file, and wish to do + something unusual. + +
+ -d [--debug]
Needs a numeric argument; a bitmask telling what to output. + The values below may be added in order to output multiple debugging + info. + + + + + + + +
Value

Dumps. . .

1

All warnings available and their current status.

2

Statistics for all lists in the resource file.

4

The contents of all lists in the resource file.

8

Misc. other status information.

16

Run-time info (note that this isn’t widely used).

+ The info is produced after all switches and resource files have been + processed. +

It is possible to install versions of ChkTEX that ignore this flag; this means + that it is not certain that this flag works. +

+ -W [--version]
Displays version information, and exits.
+
+Muting warning messages:
Controls whether and in what form error messages will + appear. Usually they accept a specific warning number (e.g. “-w2”), but + you may also say “all” (e.g. “-wall”) which does the operation on all + warnings. +
+ -w [--warnon]
Makes the message number passed as parameter a warning + and turns it on. +
+ -e [--erroron]
Makes the message number passed as parameter an error + and turns it on. +
+ -m [--msgon]
Makes the message number passed as parameter a message + and turns it on. Messages are not counted. +
+ -n [--nowarn]
Turns the warning/error number passed as a parameter off.
+
+Output control flags:
Determines the appearance and destination of the error + reports. +
+ -q [--quiet]
Shuts up about copyright information. +
+ -o [--output]
Normally, all errors are piped to stdout. Using this option + with a parameter, errors will be sent to the named file instead. Only + information relative to the LATEX file will be sent to that file. Memory + problems and similar will as as always be sent to stderr. If a file with + the name given already exists, it will be renamed to “foobar.bak” + (“foobar.$cl” under MS-DOS), “foobar” being the name of the file. + See also “-b”. +
+ -v [--verbosity]
Specifies how much and how you wish the error reports + to be displayed. This is specified in the “chktexrc” file; we’ll list the + + default values below. If you wish, you may thus edit the “chktexrc” file + to add or modify new formats. +

The default is mode 1 (that is, the second entry in the “chktexrc” file), + using -v without any parameter will give you mode 2. +

+

+ 0
Will show the information in a way that should be suitable for further + parsing by awk, sed or similar. The format is as follows: + +
+ File:Line:Column:Warning number:Warning message +
+
+

The colons may be replaced with another string; use the -s switch for + this. +

As the program does not output all errors in quite order, this output + format is also suitable for piping through “sort”. +

+ 1
Shows the information in a way which is more comprehensible + for humans, but which still doesn’t need anything but a glass + tty. +
+ 2
Shows the information in a fancy way, using escape codes and stuff. It is the + indeed most readable of all modes; however, it needs proper set up of the + “ChkTeX.h” at compilation time. UNIX boxes, however, will find the + information automatically. +
+ 3
Shows the information suitable for parsing by Emacs; this is the same + format as lacheck uses. More formally, it is the following: + +
+ "File", line Line: Warning message +
+
+

+

To utilize this, type M-x compile RET. Delete whatever is written in the + minibuffer, and type chktex -v3 texfile.tex, and you should be able + to browse through the error messages. Use C-x ` to parse the + messages. +

+ 4
More or less the same as -v3, but also includes information on where the + error actually was found. Takes somewhat longer time to parse, but much + more informative in use.
+
+ -f [--format]
Specifies the format of the output. This is done using a + format similar to “printf()”, where we support the specifiers listed + below. + + + + + + + + + + + + + + + +
Code

Description

%b

String to print between fields (from -s option).

%c

Column position of error.

%d

Length of error (digit).

%f

Current filename.

%i

Turn on inverse printing mode.

%I

Turn off inverse printing mode.

%k

kind of error (warning, error, message).

%l

line number of error.

%m

Warning message.

%n

Warning number.

%u

An underlining line (like the one which appears when + using “-v1”).

%r

Part of line in front of error (‘S’ - 1).

%s

Part of line which contains error (string).

%t

Part of line after error (‘S’ + 1).

+

Other characters will be passed literally; thus you can say “%%” to achieve a + single percent sign in the output. Please note that we may introduce + other specifiers in the future, so don’t abuse this feature for other + characters. +

Also, note that we do not support field lengths (yet). This may come in the + future, if I get the time... +

The -v command is implemented by indexing into the “chktexrc” file; read + that for seeing how each format is implemented. If you find yourself using a + particular format often by using the -f switch, consider putting it in the + “chktexrc” file instead. +

+ -V [--pipeverb]
Which entry we’ll use in the “chktexrc” file whenever stdout + isn’t a terminal. +

The default is to use the same mode as specified with the -v switch; using -V + without any parameter will give you mode 1. +

This switch was implemented because GNU less has problems with the escape + codes ChkTEX uses for displaying inverse text. Under UNIX, there’s another + + way around, though, which is slightly more elegant. Add the following line to + your “.envir” file: + +
+ setenv LESS -r +
+
+

+

+ -p [--pseudoname]
With this switch, you can provide the filename which will + be used when we report the errors. This may be useful in scripts, + especially when doing pipes. It is in other words similar to C’s #line + directive. +

We will only assume this name for the uppermost file; files that this one in + turn \input are presented under their original names. This seems most logical + to me. +

+ -s [--splitchar]
String to use instead of the colons when doing -v0; e.g. this + string will be output between the fields. +
+
+Boolean switches:
Common for all of these are that they take an optional parameter. + If it is 0, the feature will be disabled, if it is 1, it will be enabled. All + these features are on by default; and are toggled if you don’t give any + parameter. +

+

+ -b [--backup]
If you use the -o switch, and the named outputfile exists, it + will be renamed to filename.bak. +
+ -I [--inputfiles]
Execute \input statements; e.g. include the file in the + input. Our input parsing does of course nest; we use an input-stack to + keep track of this. +
+ -H [--headererr]
Show errors found in front of the \begin{document} line. + Some people keep lots of pure TEX code there, which errors can’t be + detected reliably (in other words, we will in most cases just produce a + lot of garbage). +
+ -g [--globalrc]
Read in the global resource file. This switch may be useful + together with the -l option. +
+ -t [--tictoc]
Display a twirling baton, to show that we’re working. -v0 + does an -t0, too, as it assumes that the user then uses the program + non-interactively. This is now a no-op. +
+ -x [--wipeverb]
Ignore the “\verb” + command found within the LATEX file and its argument is completely + by the checking routines. This is done by simply overwriting them. If you + somehow don’t like that (for instance, you would like to count brackets + inside those commands, too), use this switch.
+ +
+

If you don’t specify any input LATEX-files on the commandline, we’ll read from +stdin. To abort stdin input, press the following keycombinations: +

+ + +
Machine Key-combination
Amiga Ctrl + \
UNIX Ctrl + D
MS-DOS Ctrl + Z, followed by return.
+
+

By default, we’re using the 1994 version of GNU’s “getopt()” routine. For those +of you who have only used the Amiga’s “ReadArgs()”, here are some quick +instructions: +

+

+

5.1.3 The “chktexrc” file
+

You should also take a look at the “chktexrc” file. As the file is self-documenting; you +should be able to get the meaning of each keyword by simply reading the file. The +method for finding it, however, has grown rather complex. An outline is given +below. +

If ChkTEX finds multiple files when searching, each and everyone will be read in the +order specified below. The “Keyword ={ item item ...}” may thus be necessary to +reset previously defined lists. +

In this list, “$foo” is assumed to be the environment variable “foo”: +

+

    +
  1. First, we’ll take a look at the directory which was specified as “DATADIR” + during compilation (this does not happen on Amiga machines). On UNIX + boxes, this usually evaluates to “/usr/local/share/chktexrc” or similar, + under MS-DOS it is set to “\emtex\data\chktexrc”. +
  2. +
  3. Look in the following system directories: +
    + + + + +
    Machine Directory
    2.04+ Amiga ENV:.chktexrc
    1.3 Amiga S:.chktexrc
    UNIX $HOME/.chktexrc” or “$LOGDIR/.chktexrc
    MSDOS Program installation path
    + +
  4. +
  5. Look for it in the directory pointed to by an environment variable, as specified in + the table below: + + + + +
    Machine

    Directory

    Amiga

    $CHKTEXRC/.chktexrc

    UNIX

    $CHKTEXRC/.chktexrc

    MSDOS

    $CHKTEXRC\chktexrc”, + “$CHKTEX_HOME\chktexrc” + or + “$EMTEXDIR\data\chktexrc

    +
  6. +
  7. Look for it in the current directory. On UNIX and Amiga boxes, we expect the + filename to be “.chktexrc”; on other machines “chktexrc”. +
+

If you for some reason wish to undo what the previous files may have done, you may +say “CmdLine { -g0 -r }” somewhere in the “chktexrc” file; this will reset all previous +settings. +

+

5.1.4 Hints
+

I’ve tried to collect some advice that may be useful -- if you have a favourite hint, feel +free to send it to me! +

+

+

5.1.5 Bugs
+

No fatal ones, I think, but the program currently has some problems when a +LATEX command/parameter stretch over a two lines -- some extra spaces may be +inserted into the input. I regard the program as fairly well tested; using the SAS/C +“cover” utility I was able to make sure that approximately 95% of the code has +actually been run successfully in the final version. This does indeed leave some +lines; most of these are procedure terminating brackets or “can’t happen” lines, +though. +

We’ve got some problems when isolating the arguments of a command. Although +improved, it will certainly fail in certain cases; ChkTEX can for instance not handle +arguments stretching over two lines. This also means that “WIPEARG” entries in the +“chktexrc” file will only have the first half of their argument wiped if the argument +stretches over two lines. We will, however, take care not to wipe parenthesis in such cases, +in order to avoid false warnings. +

Before submitting a bug report, please first see whether the problem can be solved by +editing the “chktexrc” file appropiately. +

+

5.2 ChkWEB

+

This shell script is provided for checking CWEB files. The template is as follows: + +
+chkweb [options] file1 file2 ... +
+
+

As you may see from the script, it is only a trivial interface towards deweb and ChkTEX. +It does not support any individual options on the command line -- all options found will +be passed onto ChkTEX. If “--” or a filename is found, the remaining parameters will be +ignored. The only real intelligence it features is that it will try to append .w to filenames +it can’t find. +

If no filenames are given, we will read from stdin. +

+

5.3 DeWEB

+

This program strips away C code and CWEB commands from CWEB sources. It is called +with the following synopsis: + +
+deweb file1 file2 ... +
+
+

+

deweb filters away all C & CWEB commands from a CWEB source code. This leaves +only the LATEX code. This stripped code, in turn, may then be passed to a suitable +syntax checker for LATEX, like ChkTEX and lacheck, or spell-checkers like +ispell. +

When deweb strips away the C code from your CWEB source, it tries to preserve line +breaks. This means that the error reports from your favorite tool will be correct +regarding to line numbers. In most cases, the column position will also be correct. This +significantly simplifies finding the errors in the LATEX source (in contrast to +the output from cweave, which output is truly difficult to figure anything out +from). +

deweb accepts a list of filenames on the argument line, and will send its output to +stdout. If no filenames are given, it will read from stdin, acting as a filter. No options are +currently accepted. +

Macho users may try to pipe the output from deweb directly into LATEX, +theoretically, this should work. This would ease the debugging of the LATEX code +significantly, as when LATEX complains about wrong syntax, you’ll be able to find the +erroneous line much more easily. Don’t expect that the output looks very much like the +final one, though. +

deweb should now understand all correct CWEB opcodes. If it complains about not +understanding a correct opcode, please inform the author. +

+

5.3.1 Bugs
+

deweb will not even compile under Perl versions before perl v5. Unfortunately, this means +that we can’t even tell the user why we failed; Perl will just complain about not being +able to compile the regexps. +

+

6 Explanation of error messages

+

Below is a description of all error-messages ChkTEX outputs. Error messages set in italic +type are turned off by default. Where margin paragraphs are listed in the text, +they refer to the keyword in the “chktexrc” file which controls the discussed +warning. +

+

+
Silent

+
Warning 1:

Command + terminated + with + space.

+
+ +

You tried to terminate a command with a blank space. Usually, this is + an error as these are ignored by LATEX. In most cases, you would like + to have a real space there. +

+

+ \LaTeXis a typesetter.
+LATEXis a typesetter.
+\LaTeX\ is a typesetter.
+LATEX is a typesetter.
+

+
+
+

+
Linker

+
Warning 2:

Non-breaking + space + (`~') + should + have + been + used.

+
+

When reading a document, it is not very pretty when references are split + across lines. If you use the ~ character, LATEX will assign a very high + penalty for splitting a line at that point. ChkTEX issues this warning + if you have forgot to do this. +

+

+ Please refer to figure \ref{foo}.
+Please refer to figure 11.
+Please refer to figure~\ref{foo}.
+Please refer to figure 11.
+

+
+

+
Warning 3:

You + should + enclose + the + previous + parenthesis + with + `{}'.

+ +

+

This is a warning which you may ignore, but for maximum aestethic + pleasure, you should enclose your bracket characters with ‘{}’s. +

+

+ $ [(ab)^{-1}] \^{-2}$
+[(ab)-1]-2
+${[{(ab)}^{-1}]}^{-2}$
+[(ab)-1]-2
+

+
+
+

+
Italic +
ItalCmd +
NonItalic

+
Warning 4:

Italic + correction + (`\/') + found + in + non-italic + buffer.

+
+

If you try to use the \/ command when ChkTEX believes that the + buffer is not outputted as italic, you’ll get this warning. +

+

+ This is an\/ example
+This is an example.
+This is an example.
+This is an example.
+

+
+
+

+
Italic +
ItalCmd + +
NonItalic

+
Warning 5:

Italic + correction + (`\/') + found + more + than + once.

+
+

If the buffer is italic, and you try to use the \/ command more than + once, you’ll get this warning. +

+

+ This {\it example\/\/} is not amusing.
+This example is not amusing.
+This {\it example\/} is not amusing.
+This example is not amusing.
+

+
+
+

+
Italic +
ItalCmd +
NonItalic

+
Warning 6:

No + italic + correction + (`\/') + found.

+
+

You get this error if ChkTEX believes that you are switching from italic + to non-italic, and you’ve forgot to use the \/ command to insert that + extra little spacing. If you use the “em” option, you may ignore this + warning. +

+

+ This {\it example } is not amusing, either.
+This example is not amusing, either.
+This {\it example\/} is not amusing, either.
+This example is not amusing, either.
+

+
+ +
+

+
IJAccent

+
Warning 7:

Accent + command + `command' + needs + use + of + `command'.

+
+

If you’re using accenting commands, ‘i’ and ‘j’ should lose their dots + before they get accented. This is accomplished by using the \i, \j, + \imath and \jmath command. +

+

+ This is an example of use of accents: \'{i}.
+This is an example of use of accents: í.
+This is an example of use of accents: \'{\i}.
+This is an example of use of accents: í.
+

+
+
+

+
HyphDash +
NumDash +
WordDash

+
Warning 8:

Wrong + length + of + dash + may + have + been + used.

+
+

This warning suggests that a wrong number of dashes may have been + used. It does this by classifying the dash according to the the character + in front and after the dashes. +

If they are of the same type, ChkTEX will determine which keyword + to use in the “chktexrc” file. If not, it will shut up and accept that it + doesn’t know. + +

+ + + + +
Character type Keyword in “chktexrc file
Space WordDash
Number NumDash
Alphabetic character HyphDash
+

This is more or less correct, according to my references. Hopefully this check + can be even more improved (suggestions?). +

+

+ It wasn't anything - just a 2---3 star--shots.
+It wasn’t anything - just a 2--3 star-shots.
+It wasn't anything --- just a 2--3 star-shots
+It wasn’t anything -- just a 2-3 star-shots.
+

+
+

+
Warning 9:

`%s' + expected, + found + `%s'.

+ +
Warning 10:

Solo + `%s' + found.

+

+

You get this warning whenever brackets or environments don’t match. + ChkTEX expect to find matching brackets/environments in the same + order as their opposites were found, and no closing delimiters which + haven’t been preceded by an opening one. +

While bracket matching is not an explicit error, it is usually a sign that + something is wrong. +

+
+

+
CenterDots +
LowDots

+
Warning 11:

You + should + use + `%s' + to + achieve + an + ellipsis.

+ +
+

Simply typing three “.” in a row will not give a perfect spacing withing + the between the dots. The \ldots is much more suitable for this. +

In math mode, you should also distinguish between \cdots and \ldots; + take a look at the example below. +

+

+ Foo...bar. $1,...,3$. $1+...+3$. $1,\cdots,3$.
+Foo...bar. 1,...,3. 1 + ... + 3. 1,...,3.
+Foo\dots bar. $1,\ldots,3$. $1+\cdots+3$. $1,\ldots,3$.
+Foo...bar. 1,...,3. 1 + ... + 3. 1,...,3.
+

+
+
+

+
Abbrev

+
Warning 12:

Interword + spacing + (`\ ') + should + perhaps + be + used.

+
+

One of the specified abbreviations were found. Unless you have + previously said \frenchspacing, you’ll have incorrect spacing, which + one should avoid if possible. +

+

+ This is an example, i.e. an demonstration.
+This is an example, i.e. an demonstration.
+This is an example, i.e.\ an demonstration.
+This is an example, i.e. an demonstration.
+

+
+

+
Warning 13:

Intersentence + spacing + (`\@') + should + perhaps + be + used.

+ +

+

LATEX’ detection of whether a period ends a sentence or not, is only + based upon the character in front of the period. If it’s uppercase, it + assumes that it does not end a sentence. While this may be correct in + many cases, it may be incorrect in others. ChkTEX thus outputs this + warning in every such case. +

+

+ I've seen an UFO! Right over there!
+I’ve seen an UFO! Right over there!
+I've seen an UFO\@! Right over there!
+I’ve seen an UFO! Right over there!
+

+
+

+
Warning 14:

Could + not + find + argument + for + command.

+

+

ChkTEX will in some cases need the argument of a function to detect an + error. As ChkTEX currently processes the LATEX file on a line-by-line + basis, it won’t find the argument if the command which needed it was + on the previous line. On the other hand, this may also be an error; you + ought to check it to be safe. +

+

+ $\hat$
+This will give a LATEX error...
+$\hat{a}$
+â
+

+
+

+
Warning 15:

No + match + found + for + `%s'.

+ +

+

This warning is triggered if we find a single, opening bracket or + environment. While bracket matching is not an explicit error, it is + usually a sign that something is wrong. +

+
+

+
MathEnvir

+
Warning 16:

Mathmode + still + on + at + end + of + LaTeX + file.

+
+

This error is triggered if you at some point have turned on mathmode, + and ChkTEX couldn’t see that you remembered to turn it off. +

+

+
Warning 17:

Number + of + `character' + doesn't + match + the + number + of + `character'.

+

+

Should be self-explanatory. ChkTEX didn’t find the same number of an + opening bracket as it found of a closing bracket. +

+ +

+
Warning 18:

You + should + use + either + `` + or + '' + as + an + alternative + to + `"'.

+

+

Self-explanatory. Look in the example, and you’ll understand why. +

+

+ This is an "example"
+This is an ”example”
+This is an ``example''
+This is an “example”
+

+
+

+
Warning 19:

You + should + use + "'" + (ASCII + 39) + instead + of + "'" + (ASCII + 180).

+

+

On some keyboards you might get the wrong quote. This quote looks, + IMHO, ugly compared to the standard quotes, it doesn’t even come out + as a quote! Just see in the example. +

+ +

+ ``There's quotes and there's quotes ''
+“Theres quotes and theres quotes
+``There's quotes and there's quotes''
+“There’s quotes and there’s quotes”
+

+
+
+

+
Userwarn

+
Warning 20:

User-specified + pattern + found.

+
+

A substring you’ve specified using USERWARN in the “chktexrc” file, has + been found.

+

+
Warning 21:

This + command + might + not + be + intended.

+

+

I implemented this because a friend of mine kept on making these + mistakes. Easily done if you haven’t gotten quite into the syntax of + LATEX. +

+

+ \LaTeX\ is an extension of \TeX\. Right?
+LATEX is an extension of TEXṘight?
+\LaTeX\ is an extension of \TeX. Right?
+LATEX is an extension of TEX. Right?
+

+
+

+
Warning 22:

Comment + displayed.

+

+

ChkTEX dumps all comments it finds, which in some cases is useful. + I usually keep all my notes in the comments, and like to review + them before I ship the final version. For commenting out parts of the + document, the “comment” environment is better suited. +

+ +

+
Warning 23:

Either + ''\,' + or + '\,'' + will + look + better.

+

+

This error is generated whenever you try to typeset three quotes in a + row; this will not look pretty, and one of them should be separated from + the rest. +

+

+ ```Hello', I heard him said'', she remembered.
+“‘Hello’, I heard him said”, she remembered.
+``\,`Hello', I heard him said'', she remembered.
+“ ‘Hello’, I heard him said”, she remembered.

+
+
+

+
PostLink

+
Warning 24:

Delete + this + space + to + maintain + correct + pagereferences.

+
+

This message, issued when a space is found in front of a \index, \label + or similar command (can be set in the “chktexrc” file). Sometimes, + this space may cause that the word and the index happens on separate + pages, if a pagebreak happens just there. +

You might also use this warning to warn you about spaces in front of + footnotes; however, the warning text may not be entirely correct then. +

+

+ Indexing text \index{text} is fun!
+Indexing text\index{text} is fun!
+

+
+ +

+
Warning 25:

You + might + wish + to + put + this + between + a + pair + of + `{}'

+

+

This warning is given whenever ChkTEX finds a “^  ”’ or a “_” + followed by either two or more numberic digits or two or more alphabetic + characters. In most situations, this means that you’ve forgotten some + {}’s. +

+

+ $5\cdot10^10$
+5 . 1010
+$5\cdot10^{10}$
+5 . 1010

+
+

+
Warning 26:

You + ought + to + remove + spaces + in + front + of + punctuation.

+

+

This warning is issued if ChkTEX finds space in front of an + end-of-sentence character. +

+

+ + Do you understand ?
+Do you understand ?
+Do you understand?
+Do you understand?
+

+
+

+
Warning 27:

Could + not + execute + LaTeX + command.

+

+

Some LATEX commands will be interpreted by ChkTEX; however, + some of them are sensible to errors in the LATEX source. Most notably, + the \input command relies on that the input file exists... +

+
+

+
Italic +
ItalCmd +
NonItalic

+
Warning 28:

Don't + use + \/ + in + front + of + small + punctuation.

+
+

Italic correction should generally not be used in front of small + punctuation characters like ‘.’ and ‘,’; as it looks better when the + preceding italic character leans “over” the punctum or comma. +

+

+ It is just a {\it test\/}, don't think anything else.
+It is just a test, don’t think anything else.
+It is just a {\it test}, don't think anything else.
+It is just a test, don’t think anything else.

+
+ +

+
Warning 29:

$\times$ + may + look + prettier + here.

+

+

In ASCII environments, it is usual to use the ‘x’ character as an infix + operator to denote a dimension. The mathemathical symbol × provided + by the $\times$ command is better suited for this. +

+

+ The program opens a screen sized 640x200 pixels.
+The program opens a screen sized 640x200 pixels.
+The program opens a screen sized $640\times200$ pixels.
+The program opens a screen sized 640 × 200 pixels.

+
+

+
Warning 30:

Multiple + spaces + detected + in + output.

+

+

This warning, intended for the novice, will remind you that even if you + type multiple spaces in your input, only a single space will come out. + Some ways to come around this is listed below. +

+

+ White           is a beautiful colour.
+White is a beautiful colour.
+White~~~~~{ }{ }{ }\ \ \ is a beautiful colour.
+White         is a beautiful colour.
+

+
+
+

+
VerbEnvir

+
Warning 31:

This + text + may + be + ignored.

+ +
+

Certain implementations of the verbatim environment and derivations + of that, ignore all text on the same line as \end{verbatim}. This will + warn you about this. +

+

+
Warning 32:

Use + ` + to + begin + quotation, + not + '.

+
+
Warning 33:

Use + ' + to + end + quotation, + not + `.

+
+
Warning 34:

Don't + mix + quotes.

+

+

Proper quotations should start with a ` and end with a '; anything else + isn’t very pretty. Both these warnings are relative to this; look in the + example below. +

+

+ There are `'examples'' and there are ``examples``.
+There are ‘’examples” and there are “examples“.
+There are ``examples'' and there are ``examples''.
+There are “examples” and there are “examples”.

+
+
+

+
MathRoman

+
Warning 35:

You + should + perhaps + use + `cmd' + instead.

+ +
+

Most mathematical operators should be set as standard roman font, + instead of the math italic LATEX uses for variables. For many + operators, LATEX provides a pre-defined command which will typeset + the operator correctly. Look below for an illustration of the point. +

+

+ $sin^2 x + cos^2 x = 1$
+sin2x + cos2x = 1
+$\sin^2 x + \cos^2 x = 1$
+sin2x + cos2x = 1

+
+

+
Warning 36:

You + should + put + a + space + in + front + of/after + parenthesis.

+
+
Warning 37:

You + should + avoid + spaces + in + front + of/after + parenthesis.

+

+

Outside math mode, you should put a space in front of any group of + opening parenthesis, and no spaces after. If you have several after each + other, you should of course not put a space in between each; look in the + example below. Likewise, there should not be spaces in front of closing + parenthesis, but there should be at least one after. +

+

+ This( an example( Nuff said )), illustrates( ``my'' )point.
+This( an example( Nuff said )), illustrates( “my” )point.
+This (an example (Nuff said)), illustrates (``my'') point.
+This (an example (Nuff said)), illustrates (“my”) point.
+

+ +
+
+

+
QuoteStyle

+
Warning 38:

You + should + not + use + punctuation + in + front + of/after + quotes.

+
+

For best looking documents, you should decide on how you wish to put quotes + relative to punctuation. ChkTEX recognizes two styles; you may specify + which you use in the “chktexrc” file. A description on each style + follows: +

+Traditional:
This style is the most visually pleasing. It always puts + the punctuation in front of the quotes, which gives a continuous + bottom line. +

However, it may in certain cases be ambigious. Consider the following + example from a fictious “vi(1)” tutorial (quote taken from the Jargon + file): +

+

+ Then delete a line from the file by typing ``dd.''
+Then delete a line from the file by typing “dd.”

+

That would be very bad -- because the reader would be prone to type + the string d-d-dot, and it happens that in “vi(1)” dot repeats the last + command accepted. The net result would be to delete two lines! + This problem is avoided using logical style, described below. +

+Logical:
This style uses quotes as balanced delimiters like parentheses. While + this is not the most visual pleasing, it is can’t be misunderstood. The + above sentence would then become: +
+

+ Then delete a line from the file by typing ``dd''.
+Then delete a line from the file by typing “dd”.

+
+
+ +

+
Warning 39:

Double + space + found.

+

+

This warning is triggered whenever ChkTEX finds a space in front of + a hard space, or vice versa. This will be rendered as two spaces (which + you usually don’t wish). +

+

+ For output codes, see table ~ \ref{foo}.
+For output codes, see table   1.1.
+For output codes, see table~\ref{foo}.
+For output codes, see table 1.1.

+
+
+

+
MathEnvir

+
Warning 40:

You + should + put + punctuation + outside + inner/inside + display + math + mode.

+
+

As recommended in the TEXbook, you should try to put punctuation + outside inner math mode, as this is gets formatted better. +

Similarily, you should let any final punctuation in display math mode end up + within it. Look at the following example, which was taken from the + TEXbook: +

+

+ for $x = a,b$, or $c$.
+for x = a,b, or c.
+for $x = a$, $b$, or $c$.
+for x = a, b, or c.
+

+
+ +
+

+
Primitives

+
Warning 41:

You + ought + to + not + use + primitive + TeX + in + LaTeX + code.

+
+

This warning is triggered whenever you use a raw TEX command which + has been replaced by a LATEX equivalent. If you consider yourself a + purist (or want to be sure your code works under LATEX3), you should + use the LATEX equivalent.

+
+

+
NotPreSpaced

+
Warning 42:

You + should + remove + spaces + in + front + of + `%s'

+
+

Some commands should not be prepended by a space character, for + cosmetical reasons. This notes you of this whenever this has happened. +

+

+ This is a footnote \footnotemark[1] mark.
+This is a footnote 1 mark.
+This is a footnote\footnotemark[1] mark.
+This is a footnote1 mark.
+

+
+ +
+

+
NoCharNext

+
Warning 43:

`%s' + is + normally + not + followed + by + `%c'.

+
+

LATEX’ error message when calling \left \{ instead of left \{ is + unfortunately rather poor. This warning detects this and similar errors.

+

+

7 Future plans

+

In a somewhat prioritized sequence, this is what I’d like to put into the program -- if I +have the time. +

+ +

+

8 Notes

+

+

8.1 Wish to help?

+

As most other living creatures, I have only a limited amount of time. If you like +ChkTEX and would like to help improving it, here’s a few things I would like to receive. +The following ideas are given: +

+

Of course, people doing any of this will be mentioned in this document, and thus +receive eternal glory and appreciation. +

+

8.2 Caps and stuff

+

This program uses the “getopt()” routine, as supplied from GNU. The source +included in this distribution has been modified slightly. To make the use of +C2LOCAL easier, portions which were #ifdef’ed out, have now been commented +out. +

Where trademarks have been used, the author is aware of that they belong to +someone, and has tried to stick to the original caps. +

+

9 About the author

+

A quick summary of who I am and what I do: +

I’m 21 years old, and live in Oslo, the capital of Norway. I’m currently studying maths +and computer science at the University of Oslo; planning to get a degree within +mathematical modeling, with a dash of physics and emphazing the computer part of the +study. More precisely, in autumn’96 my studies consist of mathematical analysis, +statistics & probability calculations plus studying the relationship between society and +computers. +

At home I now possess 4 computers, of which 1 is regular use: A vanilla Amiga +1200, expanded only by a HD. The others are a 80286 PC and an Amiga 500, +both semi-out-of-order. The last one is a Commodore VIC-20, which for some +peculiar reason never seems to be used. Plans are to get a Linux-capable PC, +though. +

Most of the time in front of these computers (including SGI Indy’s and SPARC +stations at our university) is spent on C and shell programming, plus some +text-processing. +

C and shell programming are not my only knowledge areas regarding computers, +however. I write the following languages more or less: Perl, Motorola 68000 assembly +code, ARexx, Simula, C++, LATEX, HTML, AmigaGuide, Amos Basic and Installer +LISP. Once I also mastered Commodore Basic V2, the “language” included with my +VIC-20. + +

However, I also try to not to end up as a computer nerd. Thus, in addition to the +compulsory (?) interest for computers, I am a scout. Still running into the woods, +climbing the trees, falling down and climbing up once more, in other words. To be more +specific, I am a now a troop leader for ‘Ulven’ scout-group; Norwegian Scouts +Association. I am also a active rover in ‘Vålerenga’ scout-group. +

Certainly a lot more to tell (I play the piano and like cross-country skiing, for +instance); but I’ll stop here before you fall asleep...:-) +

+

10 Thanks

+

The author wishes to thank the following people (in alphabetical order): +

+

+
+ + +
Russ Bubley
russ@scs.leeds.ac.uk
+
He has been the main external beta-tester for this program, sending me loads + and loads of understandable and reproducible bug reports. If you somehow + think that ChkTEX is well-behaved and free from bugs, send warm thoughts + to Russ. He has also provided ideas for enhanced checks and so forth. +

In addition, he sent me a huge list of 238 common English abbreviations, for + inclusion in the “chktexrc” file! Together with the enhanced abbreviation + recognizer, I do now believe most abbreviations should be catched...:-)  +

Finally, he has also given me valuable hints for improving the program’s + outputting routine, and given me lots of suggestions for filtering + unnecessary/false warnings away. +

+
+ + +
Gerd Böhm
Gerd.Boehm@physik.uni-regensburg.de
+
Improved and bug-fixed the MS-DOS port of ChkTEX v1.4, sending me + ready-to-yank code patches. The original port didn’t respect all the peculiarities + of the MS-DOS file-system, unfortunately. +
+
+ + +
Lars Frellesen
frelle@math-tech.dk
+
Sent a few bug reports regarding the filtering of messages. He has also helped + me to expand the “SILENT” keyword in the “chktexrc” file. +
+
+ + +
Wolfgang Fritsch
fritsch@hmi.de
+
Author of the OS/2 port, which he did using the emx compiler. Please direct + questions regarding strictly to that port to him (I would like to receive a + carbon copy, though). +
+ +
+ + +
Stefan Gerberding
stefan@inferenzsysteme.informatik.th-darmstadt.de
+
First one to report the Enforcer hit in v1.2 when using ChkTEX as a pipe. + Also came with suggestions to make ChkTEX more easily compile on early + gcc compilers. +

He has also kept on beta-testing later versions of ChkTEX, giving me + bug-reports and enhancements requests. +

+
+ + +
Kasper B. Graversen
kbg2001@internet.dk
+
Lots of creative suggestions and improvements. Several of the warnings implemented + were based on his ideas. In addition, he has given advice for improving the + existing warnings. +

Has also provided some OS-oriented code. +

+
+ + +
Frank Luithle
f_luithle@outside.sb.sub.de
+
Wrote a translation for v1.0. Unfortunately, he remained unreachable after + that...:-/ +
+
+ + +
Nat
nat@nataa.frmug.fr.net
+
Reported the same bug as Gerberding. In addition, he taught me a few tricks + regarding the use of gcc + made me understand that the ANSI standard isn’t + unambigious; at least the getenv() call seem to be open for interpretations. + Many possible incompatibilities have been removed due to these lessons. +
+
+ + +
Michael Sanders
sanders@umich.edu
+
Has found some of the bugs in this beast; both obscure and long-lived. Has + also provided motivation to clarify this document. +
+
+ + +
Bjørn Ove Thue
bjort@ifi.uio.no
+
Author of the MSDOS port; please direct questions regarding strictly to that + port to him (I would like to receive a carbon copy, though). +
+
+ + +
Martin Ward
Martin.Ward@durham.ac.uk
+
Sent a few bug-reports; also gave me information upon where to find regexp + code. He also provided a Perl script for checking ordinary text, which ideas I + was able to implement in ChkTEX. In addition, he sent me the source code + + for lacheck; which also inspired some of the warnings.
+

+

11 Contacting the author

+

If you wish to contact me for any reason or would like to participate in the development +of ChkTEX, please write to: +

+

Jens Berger +
Spektrumvn. 4 +
N-0666 Oslo +
Norway +
E-mail: <jensthi@ifi.uio.no>

+

Any signs of intelligent life are welcomed; that should exclude piracy. +

Since the original author is unreachable, the maintainer these days is: +

+

Baruch Even +
E-mail: <chktex@ev-en.org>

+

Have fun. + + + + + diff --git a/Master/texmf/doc/chktex/ChkTeX.pdf b/Master/texmf/doc/chktex/ChkTeX.pdf new file mode 100644 index 00000000000..a6bdf6a8ef0 Binary files /dev/null and b/Master/texmf/doc/chktex/ChkTeX.pdf differ -- cgit v1.2.3