mirror of
https://github.com/kanaka/mal.git
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42 lines
944 B
TeX
42 lines
944 B
TeX
\documentclass{article}
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\usepackage
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% Uncomment this and \debug_on below when debugging.
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% [enable-debug]
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{expl3}
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\usepackage{types}
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\ExplSyntaxOn
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% Slow but quite useful.
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% \debug_on:n { all }
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% REPL
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\cs_new:Nn \repl_loop:
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{
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% \ior_str_get_term is able to display a prompt on the same line,
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% but this would make ./run far more complex for little benefit.
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\iow_term:n {user>~}
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\ior_str_get_term:nN {} \l_tmpa_str
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\str_if_eq:VnF \l_tmpa_str {MAL_LATEX3_END_OF_INPUT} % from ./run
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{
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% Ignore empty lines, the MAL self-hosting relies on this
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% *not* triggering an error.
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\str_if_eq:VnF \l_tmpa_str {}
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{
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\iow_term:V \l_tmpa_str
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}
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\repl_loop:
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}
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}
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% ./run removes the normal LaTeX output.
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\iow_term:n {MAL_LATEX3_START_OF_OUTPUT}
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\repl_loop:
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\iow_term:n {MAL_LATEX3_END_OF_OUTPUT} % for ./run
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\ExplSyntaxOff
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\begin{document}
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\end{document}
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