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-rw-r--r-- | Master/texmf-dist/tex/latex/ltxmisc/path.sty | 333 |
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diff --git a/Master/texmf-dist/tex/latex/ltxmisc/path.sty b/Master/texmf-dist/tex/latex/ltxmisc/path.sty deleted file mode 100644 index 19b0fe178ac..00000000000 --- a/Master/texmf-dist/tex/latex/ltxmisc/path.sty +++ /dev/null @@ -1,333 +0,0 @@ -%%% @LaTeX-style-file -%%% { -%%% author = "Philip Taylor", -%%% version = "3.03b", -%%% date = "22 July 1997", -%%% time = "15:59:31 BST", -%%% filename = "path.sty", -%%% address = "The Computer Centre -%%% RHBNC, University of London -%%% Egham Hill -%%% Egham, Surrey TW20 0EX, ENGLAND", -%%% telephone = "Tel: +44 1784 443172", -%%% FAX = "Fax: +44 1784 434348", -%%% email = "P.Taylor@Vms.Rhbnc.Ac.Uk", -%%% codetable = "ISO/ASCII", -%%% keywords = "file name, filename, path name, pathname, -%%% discretionary, discretionaries", -%%% supported = "yes", -%%% docstring = {Computer filenames, host names, and e-mail -%%% addresses tend to be long strings that -%%% cause line breaking problems for TeX. -%%% Sometimes rather long strings are -%%% encountered, such as: -%%% -%%% mighty-mouse-gw.scrc.symbolics.com -%%% -%%% This file defines a macro, \path|...|, -%%% similar to LaTeX's \verb|...| macro, that -%%% sets the text in the typewriter font, -%%% allowing hyphen-less line breaks at -%%% punctuation characters. -%%% -%%% The default set of punctuation characters is -%%% defined as -%%% -%%% \discretionaries |~!@$%^&*()_+`-=#{"}[]:;'<>,.?\/| -%%% -%%% However, you can change it as needed, for -%%% example -%%% -%%% \discretionaries +@%!.+ -%%% -%%% would assign to it the set @ % ! . which -%%% commonly occur in electronic mail addresses. -%%% -%%% The delimiter characters surrounding the -%%% arguments to \discretionaries and \path -%%% will normally be a punctuation character not -%%% found in the argument, and not otherwise -%%% significant to TeX. In particular, backslash -%%% cannot be used as a delimiter. In the rare -%%% event that this is required, set -%%% -%%% \specialpathdelimiterstrue -%%% -%%% This practice is not recommended, because TeX -%%% then runs about four times slower while it is -%%% typesetting \path\...\ requests. -%%% \specialpathdelimitersfalse is the normal -%%% setting. -%%% -%%% This file may be used in Plain TeX or AmSTeX -%%% by -%%% -%%% \input path.sty -%%% -%%% and in LaTeX by -%%% -%%% \usepackage {path} -%%% -%%% The checksum field above, if present, contains -%%% a CRC-16 checksum as the first value, followed -%%% by the equivalent of the standard UNIX wc (word -%%% count) utility output of lines, words, and -%%% characters. This is produced by Robert -%%% Solovay's checksum utility. -%%% } -%%% } -%%% ==================================================================== - -% ====================================================================== -% -% The \path Macro -% -% An early prototype of this code which was developed by Nelson H. F. -% Beebe <beebe@math.utah.edu> used a recursive macro to peel off one -% character at a time, then with a nest of \ifx statements, test for -% each punctuation character, and if one is found, insert discretionary -% linebreaks in the form of \- or \penalty0. While this usually works, -% it is not entirely satisfactory, because the nested \ifx statements -% are ugly, and the recursion can exhaust TeX's macro stack for -% arguments longer than about 30 characters. -% -% A second version by NHFB built upon the ideas used by the LaTeX -% \verb|...| macro; this was mostly successful, but was flawed by its -% inability to handle at least the three characters ^ [ ], by loss of -% use of @ for naming internal private macros, and by its inability to -% allow the set of characters at which breaks are permissible. -% -% The problem was then passed off to Philip Taylor, who wrote this third -% version which fully solves the problem. Phil therefore gets the -% author credit in the file header above. [Gee, thanks ! ** Phil] -% -% Revision history (reverse time order): -% -% 3.03b [22-Jul-1997] -% Summary: No code changes. An out-of-date example removed, the syntax -% for LaTeX2e changed to "\usepackage {path}", and the "checksum" -% comments modified to indicate that the checksum is not necessarily -% present. The initial opening brace re-positioned to align -% with the matching closing brace, and the inner closing brace -% re-positioned to align with the inner opening brace. A check made -% to ensure that no <tab> characters are present. -% -% 3.03a [22-Jul-1997] -% Summary: No code changes from V3.03; e-mail addresses, telephone numbers, -% etc. amended to reflect current situation. Checksum removed. -% -% 3.03 [03-Dec-1991] -% Problem: A \path|...| entry in a LaTeX index is set with an -% preceding blank line. -% Solution: Add \leavevmode before \hbox{}; without it, an extra blank -% line gets typeset before every invocation of \path in a -% LaTeX theindex environment. -% Diagnosis: To avoid hyphenation, the expansion of \path starts with -% an \hbox{} (c.f. the TeXbook, p. 454); LaTeX indices are -% basically set in vertical mode, with each index entry a -% paragraph in its own right; when an \hbox {} is -% encountered in vmode, it is typeset in vmode, and TeX -% continues; the first real character is encountered, and -% TeX enters unrestricted horizontal mode. The \hbox {} and -% the first character are therefore on separate lines, -% separated by \baselineskip. -% -% 3.02 [23-Oct-1991 13:45:12] -% First released version. -% ====================================================================== - -\immediate\write16{This is path.sty, Version 3.03 <03-Dec-1991>} - -%%% We will regrettably need one \count variable with an open name, -%%% in which to save the category code of commercial-at ... - -\newcount \ATcode -\ATcode = \catcode `\@ - -%%% Make commercial-at a letter to provide concealed control sequences - -\catcode `\@ = 11 - -%%% and then declare two \count variables with concealed names - -\newcount \c@tcode -\newcount \c@unter - -%%% and a boolean variable with an open name, to specify the nature of -%%% the delimiters which will be associated with the \path command - -\newif \ifspecialpathdelimiters - -%%% We need to define control sequences which expand to both -%%% active and passive spaces ... - -\begingroup -\catcode `\ = 10 -\gdef \passivesp@ce { } -\catcode `\ = 13\relax% -\gdef\activesp@ce{ }% -\endgroup - -%%% \discretionaries will define a macro \discr@ti@n@ri@s which will -%%% make every character between the first and final <delim> a -%%% discretionary breakpoint. - -\def \discretionaries %%% <delim> <chars> <delim> - % start a group (ended in \discr@ti@naries ), - % make every character (apart from space) active, - % then transfer control to \discr@tionaries ... - {\begingroup - \c@tcodes = 13 - \discr@tionaries - } - -%%% \discr@tionaries will receive as parameter the initial <delim> -%%% which will delimit the set of discretionaries; this <delim> -%%% will be active. - -\def \discr@tionaries #1%%% <delim> - % knowing the initial <delim>, define \discr@ti@naries with a - % delimited parameter structure, the final delimiter being - % the second instance of <delim> - {\def \discr@ti@naries ##1#1%%% <chars> <delim> - % \discr@ti@naries will receive as parameter the set of - % characters which are to be made discretionaries; it ends the - % group and then defines \discr@ti@n@ries, a tail-recursive - % macro, which will quietly process each of the - % discretionaries in turn ... - {\endgroup - \def \discr@ti@n@ries ####1%%% <char> or <delim> - % by checking to see if it has reached the end of the - % list, i.e. comparing its parameter with the known final - % <delim> ... - {\if \noexpand ####1\noexpand #1% - % if they match, there is no more to do ... - \let \n@xt = \relax - \else - % otherwise the character becomes active and is - % defined as a discretionary with the three texts - % <self> <empty> <self>, thus suppressing true - % hyphenation; the macro then prepares to process - % the next character. - \catcode `####1 = 13 - \def ####1{\discretionary - {\char `####1}{}{\char `####1}}% - \let \n@xt = \discr@ti@n@ries - \fi - % here either tail recursion occurs, if there are more - % characters to process, or tail recursion ceases if all - % have been exhausted - \n@xt - }% - % of course, none of this must take place during the \stress - % {call} of \discretionaries; execution is deferred until - % another macro such as \path calls the concealed action - % macro \discr@ti@n@ri@s; we therefore define this macro to - % have the desired effect. - \def \discr@ti@n@ri@s {\discr@ti@n@ries ##1#1}% - }% - % and finally invoke \discr@ti@naries to process the set of - % discretionary characters; it will take everything up to the - % second instance of <delim> as its parameter (and therefore as the - % set of characters to be processed). - \discr@ti@naries - } - -%%% \path, which is the user interface to \p@th, first checks -%%% to see whether \specialpathdelimiters is <true> or <false>; -%%% if <true>, it needs to take special action to ensure that -%%% \stress {all} characters (apart from <space>) are acceptable -%%% as delimiters; this is very time-consuming, and should be -%%% avoided if at all possible. It also defines \endp@th, to -%%% close the appropriate number of groups, and finally transfers -%%% control to \p@th - -\def \path - {\ifspecialpathdelimiters - \begingroup - \c@tcodes = 12 - \def \endp@th {\endgroup \endgroup}% - \else - \let \endp@th = \endgroup - \fi - \p@th - } - -%%% \p@th, which has essentially the same syntax as \discretionaries, -%%% expects to be followed by a <delim>, a <path>, and a second instance -%%% of <delim>; it will typeset <path> in the \tt font with hyphenation -%%% inhibited --- breaks (but not true hyphenation) are allowed at any -%%% or all of the special characters which have -%%% previously been declared as \discretionaries. - -\def \p@th #1%%% <delim> - % it starts by opening a group (ended in \p@@th) ... - % switches to \tt, and inhibits hyphenation; - % allows breaks at \discretionaries; saves the - % catcode of the initial <delim>, because if it has also been - % declared within \discretionaries, the initial and final <delim> - % won't match (which would be a disaster); \c@tcode is overloaded, - % but there is no conflict that I can detect ... - % invokes \discr@ti@n@ri@s to render active the set of special - % characters which have previously been declared as - % \discretionaries; each of these characters will expand to a real - % \discretionary, with replacement texts <self> <null> <self>; and - % re-instates the catcode of the initial <delim>. - {\begingroup - \tt - \c@tcode = \catcode `#1 - \discr@ti@n@ri@s - \catcode `\ = \active - \expandafter \edef \activesp@ce {\passivesp@ce \hbox {}}% - \catcode `#1 = \c@tcode - % it next defines an inner macro \p@@th with delimited parameter - % structure, the final delimiter being the same as the initial - % delimiter which it has itself received as #1. - \def \p@@th ##1#1% <chars> <delim> - % Within \p@@th, - % permissible breakpoints are specified, - % the path is typeset, - % and the group(s) ended. - {\leavevmode \hbox {}##1% - \endp@th - }% - \p@@th - } - -%%% \c@tcodes expects to be followed by the r-h-s of a numeric -%%% assignment optionally including the assignment operator; it saves -%%% the value of the r-h-s in \c@tcode, and invokes \c@tc@des. - -\def \c@tcodes {\afterassignment \c@tc@des \c@tcode} - -%%% \c@tc@des uses the value saved in \c@tcode, and assigns it to the -%%% \catcode of all characters with the single exception of <space>, -%%% which retains its normal catcode of 10; on exit, every single -%%% character apart from <space> will have the catcode which followed -%%% \c@tcodes. The code is optimised to avoid unnecessary usage of -%%% save-stack space. - -\def \c@tc@des - {\c@unter = 0 - \loop - \ifnum \catcode \c@unter = \c@tcode - \else - \catcode \c@unter = \c@tcode - \fi - \ifnum \c@unter < 255 - \advance \c@unter by 1 - \repeat - \catcode `\ = 10 - } - -%%% We restore the original catcode of commercial-at - -\catcode `\@ = \ATcode - -%%% Define a default set of discretionary break characters -%%% to include all punctuation characters except vertical -%%% bar - -\discretionaries |~!@$%^&*()_+`-=#{}[]:";'<>,.?\/| - -\endinput |