Undefined control sequence for formula using MathJax (#7712)

albert-github · web-flow · commit 94556355036e · 2020-04-25T12:54:07.000+02:00
When having a code comment like: ``` @code sub postprocess { s/\(?\@Xref\{(?:[^\}]*)\}(?:[^.<]|(?:<[^<>]*>))*\.\)?//g; s/\s+\(\@pxref\{(?:[^\}]*)\}\)//g; } @Endcode ``` and using MathJax the `/(` is seen as a the beginning of a formula, but should be seen as text and can now lead to "Undefined control sequence". (The problem comes originally from code as generated by the doxygen-perl-filter for converting perl code in something doxygen does understand). This problem is similar to the problems solved in pull request #7697, but not handled here. This pull request will see `\(` (and its counter part `\)` as complete entities and replace them in a similar way as done in #7697 (but now in an earlier stage but the `&zwj;` will be properly filtered in the different output formats.
diff --git a/src/code.l b/src/code.l
@@ -1090,6 +1090,9 @@ RAWEND    ")"[^ \t\(\)\\]{0,16}\"
                                           yyextra->parmType = yyextra->name;
 					  BEGIN(FuncCall);
                                         }
+<Body>"\\)"|"\\("                       {
+                                          yyextra->code->codify(yytext);
+                                        }
 <Body>[\\|\)\+\-\/\%\~\!]		{
   					  yyextra->code->codify(yytext);
   				          yyextra->name.resize(0);yyextra->type.resize(0);
