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Diffstat (limited to 'tex/context/base/mkxl/syst-aux.mkxl')
| -rw-r--r-- | tex/context/base/mkxl/syst-aux.mkxl | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/tex/context/base/mkxl/syst-aux.mkxl b/tex/context/base/mkxl/syst-aux.mkxl index c9bed105f..278926582 100644 --- a/tex/context/base/mkxl/syst-aux.mkxl +++ b/tex/context/base/mkxl/syst-aux.mkxl @@ -3219,6 +3219,31 @@ #2\expandafter\doexpandedrecurse\expandafter{\the\numexpr#1-\plusone\relax}{#2}% \fi} +%D The next one might replace the above and provides the current step in \type {#1} +%D like \type {\dorecurse} do, but it comes with a tiny performance hit. + +\installsystemnamespace{expandedrecurse} + +\mutable\let\m_expanded_recursed\gobbleoneargument + +\permanent\def\doexpandedrecursed#1#2% this might replace: \doexpandedrecurse + {\beginlocalcontrol + \localpushmacro\m_expanded_recursed + \def\m_expanded_recursed##1{#2}% + \endlocalcontrol + \syst_do_expanded_recursed{1}{#1}{#2}% no \plusone ! + \beginlocalcontrol + \localpopmacro\m_expanded_recursed + \endlocalcontrol} + +\def\syst_do_expanded_recursed#1#2#3% + {\ifnum#1>#2\norelax + \expandafter\gobblethreearguments + \else + \m_expanded_recursed{#1}\doubleexpandafter\syst_do_expanded_recursed + \fi + {\the\numexpr#1+\plusone\relax}{#2}{#3}} + %D As we can see here, the simple command \type{\dorecurse} is a special case of the %D more general: %D |