diff options
| -rw-r--r-- | luatexbase-compat.dtx | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/luatexbase-compat.dtx b/luatexbase-compat.dtx index c413bab..4d7f987 100644 --- a/luatexbase-compat.dtx +++ b/luatexbase-compat.dtx @@ -121,9 +121,9 @@ See source file '\inFileName' for details. % % \section{Documentation} % -% Two problems are currently addressed by this package: changes in the syntax -% of |\directlua|, and variable policies for primitives activation and naming -% (in \luatex itself as well as in \texlive). +% Three problems are currently addressed by this package: changes in the +% syntax of |\directlua|, version information, and variable policies for +% primitives activation and naming (in \luatex itself as well as in \texlive). % % \medskip % @@ -141,6 +141,14 @@ See source file '\inFileName' for details. % % \medskip % +% Current versions of \luatex make the version available directly from Lua as +% |tex.luatexversion| and |tex.luatexrevision|. However, older versions (such +% as 0.25.4) didn't, which makes it particularly uneasy to test the version +% from within Lua. The present package makes this information available as +% |luatexbase.luatexversion| and |luatexbase.luatexrevision|. +% +% \medskip +% % Starting with \luatex 0.39.0, the only primitives available in Ini\tex mode % are the basic primitives from \tex{}82 and |\directlua|. All other % primitives are hidden by default and have to be activated using a Lua @@ -298,6 +306,17 @@ See source file '\inFileName' for details. \the\toks0 % \end{macrocode} % +% \subsection{Version information} +% +% Make |\luatexversion| and |\luatexrevision| available from Lua. +% +% \begin{macrocode} +\luatexbase@directlua{% + luatexbase = luatexbase or {} + luatexbase.luatexversion = \number\luatexversion\space + luatexbase.luatexrevision = \number\luatexrevision\space} +% \end{macrocode} +% % \subsection{Primitives} % % Try reasonably hard to activate a primitive. First, check if it is @@ -379,6 +398,8 @@ See source file '\inFileName' for details. \luatexbase@directlua{local answer = 42} \luatexbase@ensure@primitive{primitive} \luatexprimitive\relax +\luatexbase@directlua{assert(type(luatexbase.luatexversion) == 'number')} +\luatexbase@directlua{assert(type(luatexbase.luatexrevision) == 'number')} %</testplain,testlatex> %<testplain>\bye %<testlatex>\stop |