diff options
Diffstat (limited to 'tex/context/base/syst-gen.tex')
| -rw-r--r-- | tex/context/base/syst-gen.tex | 68 |
1 files changed, 56 insertions, 12 deletions
diff --git a/tex/context/base/syst-gen.tex b/tex/context/base/syst-gen.tex index f65eaf75f..f5643fcbd 100644 --- a/tex/context/base/syst-gen.tex +++ b/tex/context/base/syst-gen.tex @@ -162,33 +162,69 @@ \chardef\protectionthreshold=2 +% \def\unprotect +% {\ifcase\protectionlevel +% \edef\doprotectcharacters% +% {\catcode`\noexpand @=\the\catcode`@ +% \catcode`\noexpand !=\the\catcode`! +% \catcode`\noexpand ?=\the\catcode`? }% +% \let\protect\doprotect +% \fi +% \catcode`@=11 +% \catcode`!=11 +% \catcode`?=11 +% \advance\protectionlevel 1 +% \ifnum\protectionlevel>\protectionthreshold +% \message{<unprotect \the\protectionlevel>}% +% \fi} +% +% \def\doprotect% +% {\ifnum\protectionlevel=1 +% \doprotectcharacters +% \let\doprotectcharacters\relax +% \let\protect\normalprotect +% \fi +% \ifnum\protectionlevel>\protectionthreshold +% \message{<protect \the\protectionlevel>}% +% \fi +% \advance\protectionlevel -1 } + +\def\saveprotectedcharacters + {\edef\doprotectcharacters + {\catcode`\noexpand @\the\catcode`@ + \catcode`\noexpand !\the\catcode`! + \catcode`\noexpand ?\the\catcode`? }} + +\def\setprotectedcharacters + {\catcode`@=11 + \catcode`!=11 + \catcode`?=11 } + \def\unprotect {\ifcase\protectionlevel - \edef\doprotectcharacters% - {\catcode`\noexpand @=\the\catcode`@ - \catcode`\noexpand !=\the\catcode`! - \catcode`\noexpand ?=\the\catcode`? }% + \saveprotectedcharacters \let\protect\doprotect \fi - \catcode`@=11 - \catcode`!=11 - \catcode`?=11 + \setprotectedcharacters \advance\protectionlevel 1 - \ifnum\protectionlevel>\protectionthreshold - \message{<unprotect \the\protectionlevel>}% + \ifnum\protectionlevel>\protectionthreshold + \reportunprotection \fi} -\def\doprotect% - {\ifnum\protectionlevel=1 +\def\doprotect + {\ifcase\protectionlevel\or \doprotectcharacters \let\doprotectcharacters\relax \let\protect\normalprotect \fi \ifnum\protectionlevel>\protectionthreshold - \message{<protect \the\protectionlevel>}% + \reportprotection \fi \advance\protectionlevel -1 } +\def\reportunprotection{\message{<unprotect \the\protectionlevel>}} +\def\reportprotection {\message{<protect \the\protectionlevel>}} + \ifx\everyeof\undefined \let\checkprotection\relax @@ -205,6 +241,14 @@ \unprotect +%D So, now we can redefine a previously defined macro as +%D follows: + +\def\setprotectedcharacters + {\catcode`@\@@letter + \catcode`!\@@letter + \catcode`?\@@letter} + %D \macros %D {@@escape,@@begingroup,@@endgroup,@@mathshift,@@alignment, %D @@endofline,@@parameter,@@superscript,@@subscript, |