diff options
Diffstat (limited to 'tex/context/base/mkiv/syst-lua.mkxl')
| -rw-r--r-- | tex/context/base/mkiv/syst-lua.mkxl | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/tex/context/base/mkiv/syst-lua.mkxl b/tex/context/base/mkiv/syst-lua.mkxl index b6f1e8eaa..cceb4f160 100644 --- a/tex/context/base/mkiv/syst-lua.mkxl +++ b/tex/context/base/mkiv/syst-lua.mkxl @@ -58,4 +58,41 @@ \let\syst_write_execute\clf_execute % always {...} +%D There is a probably rather useless \type {\expression} command that can mix \LUA\ numeric +%D expressions with \TEX\ commands (for as far that makes sense) that works like this: +%D +%D \starttyping +%D \mathchardef\foooo 1234 +%D \def \mymacro {123.45} +%D \scratchdimen 123pt +%D \scratchskip 123pt +%D \scratchtoks {34} +%D +%D \testfeatureonce{10000}{\edef\foo{\expression +%D round( +%D 12.3 * \scratchdimen +%D - (12.3 * \scratchskip) / 2 +%D + 2 ^ 3 +%D * ( +%D - sqrt(12) +%D - 10pt +%D - \foooo +%D + \luatexversion +%D - \mymacro +%D + \scratchtoks +%D + \the\scratchcounter +%D + \number\scratchcounter +%D ) +%D ) +%D \relax}} +%D +%D \expression string.format("\letterpercent f",\elapsedtime/50000) \relax +%D \stoptyping +%D +%D The final \type {\relax} is mandate because we also accept spaces. Of course we +%D could have avoided it by using outer parenthesis but this is cleaner anyway. +%D +%D The \LMTX\ version supports te \type {xmath} and \type {xcomplex} functions and +%D therefore one can have expressions that don't work in \MKIV. + \protect \endinput |