diff options
author | jfbu <jfbu@free.fr> | 2021-02-09 18:39:55 +0300 |
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committer | jfbu <jfbu@free.fr> | 2021-02-09 18:39:55 +0300 |
commit | 0c89c85a39becda24fba3bd5dcf2a637df1e05a0 (patch) | |
tree | 57cceedb575068dc45b75172516cc3c7ff20ddfc /sphinx/texinputs/sphinx.sty | |
parent | 4a239bb886ffdf9e3ce9c78e0dfbc559ff043ad5 (diff) | |
parent | 1c084670404b760fc7df8db49dfafdb510acd698 (diff) |
Merge branch '3.x' into latex_hyperlinked_caption_footnotes_on_3.x
Diffstat (limited to 'sphinx/texinputs/sphinx.sty')
-rw-r--r-- | sphinx/texinputs/sphinx.sty | 186 |
1 files changed, 182 insertions, 4 deletions
diff --git a/sphinx/texinputs/sphinx.sty b/sphinx/texinputs/sphinx.sty index 57ecdd441..556302930 100644 --- a/sphinx/texinputs/sphinx.sty +++ b/sphinx/texinputs/sphinx.sty @@ -334,6 +334,9 @@ % verbatim \DeclareBoolOption[true]{verbatimwithframe} \DeclareBoolOption[true]{verbatimwrapslines} +\DeclareBoolOption[false]{verbatimforcewraps} +\DeclareStringOption[3]{verbatimmaxoverfull} +\DeclareStringOption[100]{verbatimmaxunderfull} \DeclareBoolOption[true]{verbatimhintsturnover} \DeclareBoolOption[true]{inlineliteralwraps} \DeclareStringOption[t]{literalblockcappos} @@ -414,7 +417,7 @@ \DisableKeyvalOption{sphinx}{mathnumfig} % To allow hyphenation of first word in narrow contexts; no option, % customization to be done via 'preamble' key -\newcommand*\sphinxAtStartPar{\nobreak\hskip\z@skip} +\newcommand*\sphinxAtStartPar{\hskip\z@skip} % No need for the \hspace{0pt} trick (\hskip\z@skip) with luatex \ifdefined\directlua\let\sphinxAtStartPar\@empty\fi % user interface: options can be changed midway in a document! @@ -1193,13 +1196,188 @@ % no need to restore \fboxsep here, as this ends up in a \hbox from fancyvrb }% % \sphinxVerbatimFormatLine will be set locally to one of those two: -\newcommand\sphinxVerbatimFormatLineWrap[1]{% - \hsize\linewidth +\newcommand\sphinxVerbatimFormatLineWrap{% + \hsize\linewidth + \ifspx@opt@verbatimforcewraps + \expandafter\spx@verb@FormatLineForceWrap + \else\expandafter\spx@verb@FormatLineWrap + \fi +}% +\newcommand\sphinxVerbatimFormatLineNoWrap[1]{\hb@xt@\linewidth{\strut #1\hss}}% +\long\def\spx@verb@FormatLineWrap#1{% \vtop{\raggedright\hyphenpenalty\z@\exhyphenpenalty\z@ \doublehyphendemerits\z@\finalhyphendemerits\z@ \strut #1\strut}% }% -\newcommand\sphinxVerbatimFormatLineNoWrap[1]{\hb@xt@\linewidth{\strut #1\hss}}% +% +% The normal line wrapping allows breaks at spaces and ascii non +% letters, non digits. The \raggedright above means there will be +% an overfilled line only if some non-breakable "word" was +% encountered, which is longer than a line (it is moved always to +% be on its own on a new line). +% +% The "forced" line wrapping will parse the tokens to add potential +% breakpoints at each character. As some strings are highlighted, +% we have to apply the highlighting character per character, which +% requires to manipulate the output of the Pygments LaTeXFormatter. +% +% Doing this at latex level is complicated. The contents should +% be as expected: i.e. some active characters from +% \sphinxbreaksviaactive, some Pygments character escapes such as +% \PYGZdl{}, and the highlighting \PYG macro with always 2 +% arguments. No other macros should be there, except perhaps +% zero-parameter macros. In particular: +% - the texcomments Pygments option must be set to False +% +% With pdflatex, Unicode input gives multi-bytes characters +% where the first byte is active. We support the "utf8" macros +% only. "utf8x" is not supported. +% +% The highlighting macro \PYG will be applied character per +% character. Highlighting via a colored background gives thus a +% chain of small colored boxes which may cause some artefact in +% some pdf viewers. Can't do anything here if we do want the line +% break to be possible. +% +% First a measurement step is done of what would the standard line +% wrapping give (i.e line breaks only at spaces and non-letter, +% non-digit ascii characters), cf TeX by Topic for the basic +% dissecting technique: TeX unfortunately when building a vertical +% box does not store in an accessible way what was the maximal +% line-width during paragraph building. +% +% If the max width exceeds the linewidth by more than verbatimmaxoverfull +% character widths, or if the min width plus verbatimmaxunderfull character +% widths is inferior to linewidth, then we apply the "force wrapping" with +% potential line break at each character, else we don't. +\long\def\spx@verb@FormatLineForceWrap#1{% + % \spx@image@box is a scratch box register that we can use here + \global\let\spx@verb@maxwidth\z@ + \global\let\spx@verb@minwidth\linewidth + \setbox\spx@image@box + \vtop{\raggedright\hyphenpenalty\z@\exhyphenpenalty\z@ + \doublehyphendemerits\z@\finalhyphendemerits\z@ + \strut #1\strut\@@par + \spx@verb@getwidths}% + \ifdim\spx@verb@maxwidth> + \dimexpr\linewidth+\spx@opt@verbatimmaxoverfull\fontcharwd\font`X \relax + \spx@verb@FormatLineWrap{\spx@verb@wrapPYG #1\spx@verb@wrapPYG}% + \else + \ifdim\spx@verb@minwidth< + \dimexpr\linewidth-\spx@opt@verbatimmaxunderfull\fontcharwd\font`X \relax + \spx@verb@FormatLineWrap{\spx@verb@wrapPYG #1\spx@verb@wrapPYG}% + \else + \spx@verb@FormatLineWrap{#1}% + \fi\fi +}% +% auxiliary paragraph dissector to get max and min widths +\newbox\spx@scratchbox +\def\spx@verb@getwidths {% + \unskip\unpenalty + \setbox\spx@scratchbox\lastbox + \ifvoid\spx@scratchbox + \else + \setbox\spx@scratchbox\hbox{\unhbox\spx@scratchbox}% + \ifdim\spx@verb@maxwidth<\wd\spx@scratchbox + \xdef\spx@verb@maxwidth{\number\wd\spx@scratchbox sp}% + \fi + \ifdim\spx@verb@minwidth>\wd\spx@scratchbox + \xdef\spx@verb@minwidth{\number\wd\spx@scratchbox sp}% + \fi + \expandafter\spx@verb@getwidths + \fi +}% +% auxiliary macros to implement "cut long line even in middle of word" +\catcode`Z=3 % safe delimiter +\def\spx@verb@wrapPYG{% + \futurelet\spx@nexttoken\spx@verb@wrapPYG@i +}% +\def\spx@verb@wrapPYG@i{% + \ifx\spx@nexttoken\spx@verb@wrapPYG\let\next=\@gobble\else + \ifx\spx@nexttoken\PYG\let\next=\spx@verb@wrapPYG@PYG@onebyone\else + \discretionary{}{\sphinxafterbreak}{}% + \let\next\spx@verb@wrapPYG@ii + \fi\fi + \next +}% +% Let's recognize active characters. We don't support utf8x only utf8. +% And here #1 should not have picked up (non empty) braced contents +\long\def\spx@verb@wrapPYG@ii#1{% + \ifcat\noexpand~\noexpand#1\relax% active character + \expandafter\spx@verb@wrapPYG@active + \else % non-active character, control sequence such as \PYGZdl, or empty + \expandafter\spx@verb@wrapPYG@one + \fi {#1}% +}% +\long\def\spx@verb@wrapPYG@active#1{% +% Let's hope expansion of active character does not really require arguments, +% as we certainly don't want to go into expanding upfront token stream anyway. + \expandafter\spx@verb@wrapPYG@iii#1{}{}{}{}{}{}{}{}{}Z#1% +}% +\long\def\spx@verb@wrapPYG@iii#1#2Z{% + \ifx\UTFviii@four@octets#1\let\next=\spx@verb@wrapPYG@four\else + \ifx\UTFviii@three@octets#1\let\next=\spx@verb@wrapPYG@three\else + \ifx\UTFviii@two@octets#1\let\next=\spx@verb@wrapPYG@two\else + \let\next=\spx@verb@wrapPYG@one + \fi\fi\fi + \next +}% +\long\def\spx@verb@wrapPYG@one #1{#1\futurelet\spx@nexttoken\spx@verb@wrapPYG@i}% +\long\def\spx@verb@wrapPYG@two #1#2{#1#2\futurelet\spx@nexttoken\spx@verb@wrapPYG@i}% +\long\def\spx@verb@wrapPYG@three #1#2#3{#1#2#3\futurelet\spx@nexttoken\spx@verb@wrapPYG@i}% +\long\def\spx@verb@wrapPYG@four #1#2#3#4{#1#2#3#4\futurelet\spx@nexttoken\spx@verb@wrapPYG@i}% +% Replace \PYG by itself applied one character at a time! This way breakpoints +% can be inserted. +\def\spx@verb@wrapPYG@PYG@onebyone#1#2#3{% #1 = \PYG, #2 = highlight spec, #3 = tokens + \def\spx@verb@wrapPYG@PYG@spec{{#2}}% + \futurelet\spx@nexttoken\spx@verb@wrapPYG@PYG@i#3Z% +}% +\def\spx@verb@wrapPYG@PYG@i{% + \ifx\spx@nexttokenZ\let\next=\spx@verb@wrapPYG@PYG@done\else + \discretionary{}{\sphinxafterbreak}{}% + \let\next\spx@verb@wrapPYG@PYG@ii + \fi + \next +}% +\def\spx@verb@wrapPYG@PYG@doneZ{\futurelet\spx@nexttoken\spx@verb@wrapPYG@i}% +\long\def\spx@verb@wrapPYG@PYG@ii#1{% + \ifcat\noexpand~\noexpand#1\relax% active character + \expandafter\spx@verb@wrapPYG@PYG@active + \else % non-active character, control sequence such as \PYGZdl, or empty + \expandafter\spx@verb@wrapPYG@PYG@one + \fi {#1}% +}% +\long\def\spx@verb@wrapPYG@PYG@active#1{% +% Let's hope expansion of active character does not really require arguments, +% as we certainly don't want to go into expanding upfront token stream anyway. + \expandafter\spx@verb@wrapPYG@PYG@iii#1{}{}{}{}{}{}{}{}{}Z#1% +}% +\long\def\spx@verb@wrapPYG@PYG@iii#1#2Z{% + \ifx\UTFviii@four@octets#1\let\next=\spx@verb@wrapPYG@PYG@four\else + \ifx\UTFviii@three@octets#1\let\next=\spx@verb@wrapPYG@PYG@three\else + \ifx\UTFviii@two@octets#1\let\next=\spx@verb@wrapPYG@PYG@two\else + \let\next=\spx@verb@wrapPYG@PYG@one + \fi\fi\fi + \next +}% +\long\def\spx@verb@wrapPYG@PYG@one#1{% + \expandafter\PYG\spx@verb@wrapPYG@PYG@spec{#1}% + \futurelet\spx@nexttoken\spx@verb@wrapPYG@PYG@i +}% +\long\def\spx@verb@wrapPYG@PYG@two#1#2{% + \expandafter\PYG\spx@verb@wrapPYG@PYG@spec{#1#2}% + \futurelet\spx@nexttoken\spx@verb@wrapPYG@PYG@i +}% +\long\def\spx@verb@wrapPYG@PYG@three#1#2#3{% + \expandafter\PYG\spx@verb@wrapPYG@PYG@spec{#1#2#3}% + \futurelet\spx@nexttoken\spx@verb@wrapPYG@PYG@i +}% +\long\def\spx@verb@wrapPYG@PYG@four#1#2#3#4{% + \expandafter\PYG\spx@verb@wrapPYG@PYG@spec{#1#2#3#4}% + \futurelet\spx@nexttoken\spx@verb@wrapPYG@PYG@i +}% +\catcode`Z 11% +% \g@addto@macro\FV@SetupFont{% \sbox\sphinxcontinuationbox {\spx@opt@verbatimcontinued}% \sbox\sphinxvisiblespacebox {\spx@opt@verbatimvisiblespace}% |