% lua-widow-control % https://github.com/gucci-on-fleek/lua-widow-control % SPDX-License-Identifier: MPL-2.0+ % SPDX-FileCopyrightText: 2021 Max Chernoff \wlog{lua-widow-control v1.1.0} %%version \input ltluatex % \LuaTeX{}Base \clubpenalty=1 \widowpenalty=1 \displaywidowpenalty=0 \interlinepenalty=0 \brokenpenalty=0 \newdimen\lwcemergencystretch \lwcemergencystretch=3em \directlua{require "lua-widow-control"} % Here, we enable font expansion/contraction. It isn't strictly necessary for % \lwc/'s functionality; however, it is required for the % lengthened paragraphs to not have terrible spacing. \expandglyphsinfont\the\font 20 20 5 \adjustspacing=2 % Define \TeX{} wrappers for Lua functions \def\lwcenable{\directlua{lwc.enable_callbacks()}} \def\lwcdisable{\directlua{lwc.disable_callbacks()}} \def\iflwc{\directlua{lwc.if_lwc_enabled()}} % Enable \lwc/ by default when the package is loaded. \lwcenable % Expansion of some parts of the document, such as section headings, is quite % undesirable, so we'll disable \lwc/ for certain commands. \catcode`@=11 % We should only reenable \lwc/ at the end if it was already enabled. \newif\iflwc@should@reenable \def\lwc@patch@pre{\iflwc% \lwc@should@reenabletrue% \lwcdisable% \fi} \def\lwc@patch@post{\iflwc@should@reenable% \lwcenable% \fi} \def\lwcdisablecmd#1{% \ifdefined#1 \expandafter\def\expandafter#1\expandafter{\lwc@patch@pre #1\lwc@patch@post} \fi } \catcode`@=12 \begingroup \suppressoutererror=1 \lwcdisablecmd{\beginsection} % Sectioning \endgroup \endinput