diff options
Diffstat (limited to 'macros/latex/contrib/l3kernel/l3token.dtx')
-rw-r--r-- | macros/latex/contrib/l3kernel/l3token.dtx | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/macros/latex/contrib/l3kernel/l3token.dtx b/macros/latex/contrib/l3kernel/l3token.dtx index e934973a51..dad206a406 100644 --- a/macros/latex/contrib/l3kernel/l3token.dtx +++ b/macros/latex/contrib/l3kernel/l3token.dtx @@ -43,7 +43,7 @@ % }^^A % } % -% \date{Released 2023-04-20} +% \date{Released 2023-05-05} % % \maketitle % @@ -155,6 +155,11 @@ % \end{texnote} % \end{function} % +% \begin{variable}[added = 2017-08-07]{\c_catcode_active_space_tl} +% Token list containing one character with category code $13$, +% (\enquote{active}), and character code $32$ (space). +% \end{variable} +% % \begin{variable}[added = 2011-09-05]{\c_catcode_other_space_tl} % Token list containing one character with category code $12$, % (\enquote{other}), and character code $32$ (space). @@ -1838,6 +1843,21 @@ % \end{macro} % \end{macro} % +% \begin{variable}{\c_catcode_active_space_tl} +% While \cs{char_generate:nn} can produce active characters in some +% engines it cannot in general. It would be possible to simply change +% the catcode of space but then the code would need to avoid all +% spaces, making it quite unreadable. Instead we use the primitive +% \cs{tex_lowercase:D} trick. +% \begin{macrocode} +\group_begin: + \char_set_catcode_active:N * + \char_set_lccode:nn { `* } { `\ } + \tex_lowercase:D { \tl_const:Nn \c_catcode_active_space_tl { * } } +\group_end: +% \end{macrocode} +% \end{variable} +% % \begin{macro}{\c_catcode_other_space_tl} % Create a space with category code $12$: an \enquote{other} space. % \begin{macrocode} |