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authorKarl Berry <karl@freefriends.org>2019-02-28 15:11:56 +0000
committerKarl Berry <karl@freefriends.org>2019-02-28 15:11:56 +0000
commitcc17ad601696f5cf966c8a0b9d79144cd42828a6 (patch)
treef6007b9b2f886d942f9b30b4797e8718001f65bd /Master/texmf-dist/tex/context/base/mkiv/syst-lua.mkiv
parente298746bb92cdf7e87bc3b5b9bd973b6c429a47f (diff)
context for tl19
git-svn-id: svn://tug.org/texlive/trunk@50165 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/texmf-dist/tex/context/base/mkiv/syst-lua.mkiv')
-rw-r--r--Master/texmf-dist/tex/context/base/mkiv/syst-lua.mkiv36
1 files changed, 36 insertions, 0 deletions
diff --git a/Master/texmf-dist/tex/context/base/mkiv/syst-lua.mkiv b/Master/texmf-dist/tex/context/base/mkiv/syst-lua.mkiv
index ca5f9679ff8..3600dac3460 100644
--- a/Master/texmf-dist/tex/context/base/mkiv/syst-lua.mkiv
+++ b/Master/texmf-dist/tex/context/base/mkiv/syst-lua.mkiv
@@ -19,6 +19,42 @@
\def\expdoif #1#2{\clf_doifsame {#1}{#2}}
\def\expdoifnot #1#2{\clf_doifnotsame {#1}{#2}}
+%D Here is variant using a brainwave of the 12\high{+} hour \quotation {Long Road
+%D Out of Eden}\footnote {Eden being Backo\TeX\ 2018, where the virtues of the \type
+%D {\expanded} primitive were mentioned in talks.} trip. For now I don't really see
+%D other useful applications.
+
+\ifdefined\immediateassignment
+
+ \def\expandeddoif#1#2%
+ {\immediateassignment\edef\m_syst_string_one{#1}%
+ \immediateassignment\edef\m_syst_string_two{#2}%
+ \ifx\m_syst_string_one\m_syst_string_two
+ \expandafter\firstofoneargument
+ \else
+ \expandafter\gobbleoneargument
+ \fi}
+
+ \def\expandeddoifnot#1#2%
+ {\immediateassignment\edef\m_syst_string_one{#1}%
+ \immediateassignment\edef\m_syst_string_two{#2}%
+ \ifx\m_syst_string_one\m_syst_string_two
+ \expandafter\gobbleoneargument
+ \else
+ \expandafter\firstofoneargument
+ \fi}
+
+ \def\expandeddoifelse#1#2%
+ {\immediateassignment\edef\m_syst_string_one{#1}%
+ \immediateassignment\edef\m_syst_string_two{#2}%
+ \ifx\m_syst_string_one\m_syst_string_two
+ \expandafter\firstoftwoarguments
+ \else
+ \expandafter\secondoftwoarguments
+ \fi}
+
+\fi
+
% \testfeatureonce{100000}{\doifelse{hello world}{here i am}{}} % 0.3
% \testfeatureonce{100000}{\expandabledoifelse{hello world}{here i am}{}} % 1.5