o5r/plan9port
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

why bother?

Browse source
This commit is contained in:
rsc 2005-01-30 16:48:14 +00:00
parent 669a062b5a
commit b8e710da0b
1 changed files with 13 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

14
src/cmd/delatex.lx
View file

@ -1,9 +1,10 @@
/* Make this with: lex delatex.lex; cc lex.yy.c -ll -o delatex */ /* Make this with: lex delatex.lex; cc lex.yy.c -ll -o delatex */
L [A-Za-z] L [A-Za-z]
%Start Display Math Normal Tag %Start Display Math Normal Tag VerbPlus Bracket
%% %%
<Normal>\' {yyleng--; yymore(); /* ignore apostrophes */} <Normal>\' {yyleng--; yymore(); /* ignore apostrophes */}
<Normal>{L}+\\- {yyleng-=2; yymore(); /* ignore hyphens */} <Normal>{L}+\\- {yyleng-=2; yymore(); /* ignore hyphens */}
<Normal>[a-zA-Z0-9_]+@[a-zA-Z0-9_.]+ ; /* ignore email addresses */
<Normal>[a-z]/[^A-Za-z] ; /* ignore single letter "words" */ <Normal>[a-z]/[^A-Za-z] ; /* ignore single letter "words" */
<Normal>[A-Z]+ ; /* ignore words all in uppercase */ <Normal>[A-Z]+ ; /* ignore words all in uppercase */
<Normal>{L}+('{L}*)*{L} {printf("%s\n",yytext); /* any other letter seq is a word */} <Normal>{L}+('{L}*)*{L} {printf("%s\n",yytext); /* any other letter seq is a word */}
@ -21,8 +22,19 @@ L [A-Za-z]
<Normal>"\\label{" BEGIN Tag; <Normal>"\\label{" BEGIN Tag;
<Normal>"\\pageref{" BEGIN Tag; <Normal>"\\pageref{" BEGIN Tag;
<Normal>"\\ref{" BEGIN Tag; <Normal>"\\ref{" BEGIN Tag;
<Normal>"\\verb+" BEGIN VerbPlus;
<Normal>"\\documentclass[" BEGIN Bracket;
<Normal>"\\documentclass{" BEGIN Tag;
<Normal>"\\usepackage[" BEGIN Bracket;
<Normal>"\\usepackage{" BEGIN Tag;
<Bracket>[^\]] ;
<Bracket>"][" ;
<Bracket>"]{" BEGIN Tag;
<Bracket>"]" BEGIN Normal;
<Tag>[^}] ; /* ignore things up to next "}" */ <Tag>[^}] ; /* ignore things up to next "}" */
<Tag>"}" BEGIN Normal; <Tag>"}" BEGIN Normal;
<VerbPlus>[^+] ; /* ignore thing up to next "+" */
<VerbPlus>"+" BEGIN Normal;
<Normal>[0-9]+ ; /* ignore numbers */ <Normal>[0-9]+ ; /* ignore numbers */
<Normal>"\\(" BEGIN Math; /* begin latex math mode */ <Normal>"\\(" BEGIN Math; /* begin latex math mode */
<Math>"\\)" BEGIN Normal; /* end latex math mode */ <Math>"\\)" BEGIN Normal; /* end latex math mode */