doc-src/url.sty

removed some old-style semicolons

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−% url.sty  ver 1.1    6-Feb-1996   Donald Arseneau   [e-mail]
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−%
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−% A form of \verb that allows linebreaks at certain characters or 
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−% combinations of characters, accepts reconfiguration, and can usually
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−% be used in the argument to another command.  It is intended for email
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−% addresses, hypertext links, directories/paths, etc., which normally 
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−% have no spaces.  The font may be selected using the \urlstyle command, 
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−% and new url-like commands can be defined using \urldef.
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−%
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−% Usage:    Conditions:
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−% \url{ }   If the argument contains any "%", "#", or "^^", or ends with
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−%           "\", it can't be used in the argument to another command.  
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−%           The argument must not contain unbalanced braces.
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−% \url|  |  ...where "|" is any character not used in the argument and not 
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−%           "{".  The same restrictions as above except that the argument
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−%           may contain unbalanced braces.
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−% \xyz      for "\xyz" a defined-url;  this can be used anywhere, no matter
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−%           what characters it contains.
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−% 
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−% See further instructions after "\endinput"
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−
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−\def\url@ttstyle{%
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−\@ifundefined{selectfont}{\def\UrlFont{\tt}}{\def\UrlFont{\ttfamily}}% 
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−\def\UrlBreaks{\do\.\do\@\do\\\do\/\do\!\do\_\do\|\do\%\do\;\do\>\do\]%
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− \do\)\do\,\do\?\do\'\do\+\do\=\do@url@hyp}%
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−\def\UrlBigBreaks{\do\:}%
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−\def\UrlNoBreaks{\do\(\do\[\do\{\do\<}% (unnecessary)
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−\def\UrlSpecials{\do\ {\ }}%
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−\def\UrlOrds{\do\*\do\-}% any ordinary characters that aren't usually
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−}
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−\def\url@rmstyle{%
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−\@ifundefined{selectfont}{\def\UrlFont{\rm}}{\def\UrlFont{\rmfamily}}% 
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−\def\UrlBreaks{\do\.\do\@\do\/\do\!\do\%\do\;\do\]\do\)\do\,\do\?\do@url@hyp
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−  \do\+\do\=}%
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−\def\UrlBigBreaks{\do\:}%
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−\def\UrlNoBreaks{\do\(\do\[\do\{}% prevents breaks after *next* character
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−\def\UrlSpecials{\do\<{\langle}\do\>{\rangle\penalty\relpenalty}\do\_{\_%
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− \penalty\@m}\do\|{\mid}\do\{{\lbrace}\do\}{\rbrace\penalty\relpenalty}\do
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− \\{\mathbin{\backslash}}\do\~{\mathord{{}^{\textstyle\sim}}}\do\ {\ }}%
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−\def\UrlOrds{\do\'\do\"\do\-}%
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−}
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−\def\url@sfstyle{\url@rmstyle 
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−\@ifundefined{selectfont}{\def\UrlFont{\sf}}{\def\UrlFont{\sffamily}}% 
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−}
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−\def\url@samestyle{\ifdim\fontdimen\thr@@\font=\z@ \url@ttstyle \else
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−  \url@rmstyle \fi \def\UrlFont{}}
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−
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−\def\do@url@hyp{}% by default, no breaks after hyphens
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−
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−\@ifundefined{strip@prefix}{\def\strip@prefix#1>{}}{}
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−\@ifundefined{verbatim@nolig@list}{\def\verbatim@nolig@list{\do\`}}{}
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−
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−\def\Url{\relax\ifmmode\@nomatherr$\fi 
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− \UrlFont $\fam\z@ \textfont\z@\font 
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− \let\do\@makeother \dospecials % verbatim catcodes
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− \catcode`{\@ne \catcode`}\tw@ % except braces 
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− \medmuskip0mu \thickmuskip\medmuskip \thinmuskip\medmuskip
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− \@tempcnta\fam\multiply\@tempcnta\@cclvi 
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− \let\do\set@mathcode \UrlOrds % ordinary characters that were special
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− \advance\@tempcnta 8192 \UrlBreaks % bin
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− \advance\@tempcnta 4096 \UrlBigBreaks % rel
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− \advance\@tempcnta 4096 \UrlNoBreaks % open
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− \let\do\set@mathact \UrlSpecials % active
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− \let\do\set@mathnolig \verbatim@nolig@list % prevent ligatures 
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− \@ifnextchar\bgroup\Url@z\Url@y}
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−
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−\def\Url@y#1{\catcode`{11 \catcode`}11
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−  \def\@tempa##1#1{\Url@z{##1}}\@tempa}
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−\def\Url@z#1{\def\@tempa{#1}\expandafter\expandafter\expandafter\Url@use
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−  \expandafter\strip@prefix\meaning\@tempa\, \relax\m@th$\endgroup}
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−\let\Url@use\@empty
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−
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−\def\set@mathcode#1{\count@`#1\advance\count@\@tempcnta\mathcode`#1\count@}
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−\def\set@mathact#1#2{\mathcode`#132768 \lccode`\~`#1\lowercase{\def~{#2}}}
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−\def\set@mathnolig#1{\ifnum\mathcode`#1<32768
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−   \lccode`\~`#1\lowercase{\edef~{\mathchar\number\mathcode`#1_{\/}}}%
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−   \mathcode`#132768 \fi}
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−
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−\def\urldef#1#2{\begingroup \setbox\z@\hbox\bgroup
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−  \def\Url@z{\Url@def{#1}{#2}}#2}
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−\expandafter\ifx\csname DeclareRobustCommand\endcsname\relax
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−  \def\Url@def#1#2#3{\m@th$\endgroup\egroup\endgroup
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−    \def#1{#2{#3}}}
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−\else
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−  \def\Url@def#1#2#3{\m@th$\endgroup\egroup\endgroup
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−    \DeclareRobustCommand{#1}{#2{#3}}}
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−\fi
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−
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−\def\urlstyle#1{\csname url@#1style\endcsname}
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−
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−% Sample (and default) configuration:
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−%
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−\newcommand\url{\begingroup \Url}
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−%
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−\newcommand\path{\begingroup \urlstyle{tt}\Url}
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−%
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−% too many styles define \email like \address, so I will not define it.
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−% \newcommand\email{\begingroup \urlstyle{rm}\Url}
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−
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−% Process LaTeX \package options
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−%
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−\urlstyle{tt}
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−\@ifundefined{ProvidesPackage}{}{
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−  \ProvidesPackage{url}[1996/02/06 \space ver 1.1 \space 
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−       Verb mode for urls, email addresses, and file names]
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−  \DeclareOption{hyphens}{\def\do@url@hyp{\do\-}}% allow breaks after hyphens
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−  \DeclareOption{obeyspaces}{\let\Url@use\relax}
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−  \ProcessOptions
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−\ifx\Url@use\relax \def\Url@use#1 #2{#1\ifx\relax#2\@empty\else
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−  \penalty\relpenalty\ #2\expandafter\Url@use\fi}\fi
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−}
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−
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−\endinput
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−%
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−% url.sty  ver 1.1    6-Feb-1996   Donald Arseneau   [e-mail]
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−%
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−% This package defines "\url", a form of "\verb" that allows linebreaks,
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−% and can often be used in the argument to another command.  It can be
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−% configured to print in different formats, and is particularly useful for 
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−% hypertext links, email addresses, directories/paths, etc.  The font may 
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−% be selected using the "\urlstyle" command and pre-defined text can be 
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−% stored with the "\urldef" command. New url-like commands can be defined, 
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−% and a "\path" command is provided this way. 
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−%
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−% Usage:    Conditions:
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−% \url{ }   If the argument contains any "%", "#", or "^^", or ends with 
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−%           "\", it can't be used in the argument to another command.  
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−%           The argument must not contain unbalanced braces.
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−% \url|  |  ...where "|" is any character not used in the argument and not 
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−%           "{".  The same restrictions as above except that the argument
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−%           may contain unbalanced braces.
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−% \xyz      for "\xyz" a defined-url;  this can be used anywhere, no matter
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−%           what characters it contains.
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−% 
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−% The "\url" command is fragile, and its argument is likely to be very
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−% fragile, but a defined-url is robust.
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−%
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−% Package Option:  obeyspaces
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−% Ordinarily, all spaces are ignored in the url-text.  The "[obeyspaces]" 
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−% option allows spaces, but may introduce spurious spaces when a url
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−% containing "\" characters is given in the argument to another command.  
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−% So if you need to obey spaces should say "\usepackage[obeyspaces]{url}",
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−% and if you need both spaces and backslashes, use a `defined-url' for 
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−% anything with "\".
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−%
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−% Package Option:  hyphens
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−% Ordinarily, breaks are not allowed after "-" characters because this 
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−% leads to confusion. (Is the "-" part of the address or just a hyphen?)  
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−% The package option "[hyphens]" allows breaks after explicit hyphen 
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−% characters.  The "\url" command will *never ever* hyphenate words.
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−% 
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−% Defining a defined-url:
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−% Take for example the email address "[e-mail]" which could
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−% not be given (using "\url" or "\verb") in a caption or parbox due to the
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−% percent sign.  This address can be predefined with 
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−%    \urldef{\myself}\url{[e-mail]}   or
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−%    \urldef{\myself}\url|[e-mail]|
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−% and then you may use "\myself" instead of "\url{[e-mail]}"
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−% in an argument, and even in a moving argument like a caption because a
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−% defined-url is robust.
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−%
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−% Style: 
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−% You can switch the style of printing using "\urlstyle{tt}", where "tt"
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−% can be any defined style.  The pre-defined styles are "tt", "rm", "sf", 
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−% and "same" which all allow the same linebreaks but different fonts -- 
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−% the first three select a specific font and the "same" style uses the
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−% current text font.  You can define your own styles with different fonts 
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−% and/or line-breaking by following the explanations below.  The "\url" 
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−% command follows whatever the currently-set style dictates.
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−%
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−% Alternate commands:
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−% It may be desireable to have different things treated differently, each
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−% in a predefined style; e.g., if you want directory paths to always be 
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−% in tt and email addresses to be rm, then you would define new url-like
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−% commands as follows:
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−%
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−%    \newcommand\email{\begingroup \urlstyle{rm}\Url}
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−%    \newcommand\directory{\begingroup \urlstyle{tt}\Url}
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−%
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−% You must follow this format closely, and NOTE that the final command is 
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−% "\Url", not "\url".  In fact, the "\directory" example is exactly the 
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−% "\path" definition which is pre-defined in the package.  If you look 
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−% above, you will see that "\url" is defined with
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−%    \newcommand\url{\begingroup \Url}
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−% I.e., using whatever url-style has been selected.
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−%
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−% You can make a defined-url for these other styles, using the usual 
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−% "\urldef" command as in this example:
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−%
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−%    \urldef{\myself}{\email}{[e-mail]}
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−%
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−% which makes "\myself" act like "\email{[e-mail]}",
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−% if the "\email" command is defined as above.  The "\myself" command is
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−% robust.
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−%
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−% Defining styles:
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−% Before describing how to customize the printing style, it is best to 
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−% mention something about the unusual implementation of "\url".  Although
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−% the material is textual in nature, and the font specification required
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−% is a text-font command, the text is actually typeset in *math* mode.
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−% This allows the context-sensitive linebreaking, but also accounts for
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−% the default behavior of ignoring spaces.  Now on to defining styles.
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−%
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−% To change the font or the list of characters that allow linebreaks, you
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−% could redefine the commands "\UrlFont", "\UrlBreaks", "\UrlSpecials" etc.
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−% directly in the document, but it is better to define a new `url-style' 
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−% (following the example of "\url@ttstyle" and "\url@rmstyle") which defines 
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−% all of "\UrlBigbreaks", "\UrlNoBreaks", "\UrlBreaks", "\UrlSpecials", and 
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−% "\UrlFont".
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−%
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−% Changing font:
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−% The "\UrlFont" command selects the font.  The definition of "\UrlFont"
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−% done by the pre-defined styles varies to cope with a variety of LaTeX
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−% font selection schemes, but it could be as simple as "\def\UrlFont{\tt}".
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−% In addition to setting "\UrlFont", some characters will probably need 
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−% to be defined in the "\UrlSpecials" list because most fonts don't have 
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−% all the standard input characters.  See the definition of "\url@rmstyle", 
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−% which implements "\urlstyle{rm}".  Or even better, follow the definition
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−% of "\url@sfstyle", which executes "\url@rmstyle" and then redefines
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−% just "\UrlFont".  The nominal format for each special character "c" 
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−% in the "\UrlSpecials" list is: "\do\c{<definition>}", but you can 
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−% include other definitions too.
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−%
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−% Changing linebreaks:
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−% The list of characters that allow line-breaks is given by "\UrlBreaks" 
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−% and "\UrlBigBreaks", which have the format "\do\c" for character "c". 
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−% The differences are that `BigBreaks' have a lower penalty and have 
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−% different breakpoints when in sequence (as in "http://"): `BigBreaks' 
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−% are treated as mathrels while `Breaks' are mathbins (see The TeXbook, 
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−% p.170). In particular, a series of `BigBreak' characters will break at 
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−% the end and only at the end; a series of `Break' characters will break 
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−% after the first and after every following *pair*; there will be no 
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−% break after a `Break' character if a `BigBreak' follows.  In the case 
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−% of "http://" it doesn't matter whether ":" is a `Break' or `BigBreak' --
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−% the breaks are the same in either case; but for DECnet nodes with "::"
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−% it is important to prevent breaks *between* the colons, and that is why 
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−% colons are `BigBreaks'.
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−%
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−% It is possible for characters to prevent breaks after the next following 
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−% character (I use this for parentheses).  Specify these in "\UrlNoBreaks". 
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−%
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−% You can do arbitrarily complex things with characters by making them 
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−% active in math mode (mathcode hex-8000) and specifying the definition(s)
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−% in "\UrlSpecials".  This is used in the rm and sf styles to handle 
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−% several characters that are not present in fonts.
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−%
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−% If all this sounds confusing ... well, it is!  But I hope you won't need 
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−% to redefine breakpoints -- the default assignments seem to work well for 
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−% a wide variety of applications.  If you do need to make changes, you can 
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−% test for breakpoints using regular math mode and the characters "+=(a".
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−%
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−% Yet more flexibility:
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−% You can also set up url.sty to do multiple things with the verbatim text
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−% by defining "\Url@use", but the format of the definition is special:
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−%
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−%    \def\Url@use#1\,{ ... do things with #1 ... }
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−%
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−% Yes, that is "#1" followed by "\," then the definition.  For example, 
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−% to put a hypertext link in the DVI file:
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−%
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−%    \def\Url@use#1\,{\special{html:<a href="#1">}#1\special{html:</a>}}
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−%
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−% The End
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−% ver 1.1 6-Feb-1996:  
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−% Fix hyphens that wouldn't break and ligatures that weren't suppressed.
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−
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−Test file integrity:  ASCII 32-57, 58-126:  !"#$%&'()*+,-./0123456789
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−:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~