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author | Norbert Preining <norbert@preining.info> | 2022-04-12 03:04:20 +0000 |
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committer | Norbert Preining <norbert@preining.info> | 2022-04-12 03:04:20 +0000 |
commit | f713ac513a897193c8b6ac8e34d55d8490fe270f (patch) | |
tree | 9d3e92c83b32b83f2c473fdab5c7b1c74ae6a2cc /macros/latex/contrib/l3kernel/l3legacy.dtx | |
parent | a04c4e735928bbfb74963fc19ea3fe8b0e1b7031 (diff) |
CTAN sync 202204120304
Diffstat (limited to 'macros/latex/contrib/l3kernel/l3legacy.dtx')
-rw-r--r-- | macros/latex/contrib/l3kernel/l3legacy.dtx | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/macros/latex/contrib/l3kernel/l3legacy.dtx b/macros/latex/contrib/l3kernel/l3legacy.dtx index fb04de0adf..534d37be27 100644 --- a/macros/latex/contrib/l3kernel/l3legacy.dtx +++ b/macros/latex/contrib/l3kernel/l3legacy.dtx @@ -43,7 +43,7 @@ % }^^A % } % -% \date{Released 2022-02-24} +% \date{Released 2022-04-10} % % \maketitle % @@ -100,15 +100,19 @@ % \end{macrocode} % % \begin{macro}[EXP,pTF]{\legacy_if:n} -% A friendly wrapper. +% A friendly wrapper. We need to use the \cs{if:w} approach here, rather than +% testing against \tn{iftrue}/\tn{iffalse} as the latter approach fails for +% primitive conditionals such as \tn{ifmmode}. The \cs{reverse_if:N} here +% means that we get a slightly more useful error if the name is undefined. % \begin{macrocode} \prg_new_conditional:Npnn \legacy_if:n #1 { p , T , F , TF } { - \exp_args:Nc \if_meaning:w { if#1 } \iftrue - \prg_return_true: - \else: + \exp_after:wN \reverse_if:N + \cs:w if#1 \cs_end: \prg_return_false: - \fi: + \else: + \prg_return_true: + \fi: } % \end{macrocode} % \end{macro} |