Scan of regexps in emacs

["Mattias Engdegård" <mattiase@acm.org>]

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Here is a new regexp error scan of the Emacs source tree.
The new complaints are due to improvements in the regexp-finding
abilities of the trawler. The locations are also more precise, and
there is a caret line for extra help.


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;; Trawling ~/emacs  -*- compilation -*-
emacs/lisp/language/china-util.el:171:29: In call to looking-at: Unescaped literal `$' (pos 1)
  "\e$A"
   ..^
emacs/lisp/progmodes/cc-awk.el:191:3: In c-awk-regexp-char-list-re: Unescaped literal `^' (pos 13)
  "\\[\\(\\\\[\n\r]\\)*^?\\(\\\\[\n\r]\\)*]?\\(\\\\\\(.\\|\n\\|\r\\|\\'\\)\\|\\[:[a-z]+:\\]\\|[^]\n\r]\\)*\\(]\\|$\\)"
   ....................^
emacs/lisp/progmodes/cc-awk.el:197:3: In c-awk-regexp-innards-re: Unescaped literal `^' (pos 34)
  "\\(\\\\\\(.\\|\n\\|\r\\|\\'\\)\\|\\[\\(\\\\[\n\r]\\)*^?\\(\\\\[\n\r]\\)*]?\\(\\\\\\(.\\|\n\\|\r\\|\\'\\)\\|\\[:[a-z]+:\\]\\|[^]\n\r]\\)*\\(]\\|$\\)\\|[^[/\\\n\r]\\)*"
   .....................................................^
emacs/lisp/progmodes/cc-awk.el:201:3: In c-awk-regexp-without-end-re: Unescaped literal `^' (pos 35)
  "/\\(\\\\\\(.\\|\n\\|\r\\|\\'\\)\\|\\[\\(\\\\[\n\r]\\)*^?\\(\\\\[\n\r]\\)*]?\\(\\\\\\(.\\|\n\\|\r\\|\\'\\)\\|\\[:[a-z]+:\\]\\|[^]\n\r]\\)*\\(]\\|$\\)\\|[^[/\\\n\r]\\)*"
   ......................................................^
emacs/lisp/progmodes/cperl-mode.el:4927:30: In call to looking-at: Escaped non-special character `e' (pos 2)
  "\\(\\elsif\\|if\\|unless\\|while\\|until\\|for\\(each\\)?\\>\\(\\([ \t\n]*\\(#[^\n]*\n[ \t\n]*\\)*\\(state\\|my\\|local\\|our\\)\\)?[ \t\n]*\\(#[^\n]*\n[ \t\n]*\\)*\\$[_a-zA-Z0-9]+\\)?\\)\\>"
   ...^
emacs/lisp/progmodes/idlwave.el:3692:26: In call to re-search-backward: Character `,' included in range `+-/' (pos 311)
  "\\(\\<\\(&&\\|and\\|b\\(egin\\|reak\\)\\|c\\(ase\\|o\\(mpile_opt\\|ntinue\\)\\)\\|do\\|e\\(lse\\|nd\\(case\\|else\\|for\\|if\\|rep\\|switch\\|while\\)?\\|q\\)\\|for\\(ward_function\\)?\\|g\\(oto\\|[et]\\)\\|i\\(f\\|nherits\\)\\|l[et]\\|mod\\|n\\(e\\|ot\\)\\|o\\(n_\\(error\\|ioerror\\)\\|[fr]\\)\\|re\\(peat\\|turn\\)\\|switch\\|then\\|until\\|while\\|xor\\|||\\)\\>\\|[[(*+-/=,^><]\\)\\s-*\\*"
   .........................................................................................................................................................................................................................................................................................................................................................................................^
emacs/lisp/progmodes/scheme.el:425:3: In dsssl-font-lock-keywords: Unescaped literal `*' (pos 49)
  "(\\(and\\|c\\(ase\\|ond\\)\\|else\\|if\\|l\\(ambda\\|et\\(\\|*\\|rec\\)\\)\\|map\\|or\\|with-mode\\)\\>"
   .............................................................^
emacs/lisp/textmodes/texinfmt.el:587:3: In texinfo-part-of-para-regexp: Unescaped literal `^' (pos 223)
  "^@\\(b{\\|bullet{\\|cite{\\|code{\\|email{\\|emph{\\|equiv{\\|error{\\|expansion{\\|file{\\|i{\\|inforef{\\|kbd{\\|key{\\|lisp{\\|minus{\\|point{\\|print{\\|pxref{\\|r{\\|ref{\\|result{\\|samp{\\|sc{\\|t{\\|TeX{\\|today{\\|url{\\|var{\\|w{\\|xref{\\|@-\\|@^\\|@`\\|@'\\|@\"\\|@,\\|@=\\|@~\\|@OE{\\|@oe{\\|@AA{\\|@aa{\\|@AE{\\|@ae{\\|@ss{\\|@questiondown{\\|@exclamdown{\\|@L{\\|@l{\\|@O{\\|@o{\\|@dotaccent{\\|@ubaraccent{\\|@d{\\|@H{\\|@ringaccent{\\|@tieaccent{\\|@u{\\|@v{\\|@dotless{\\)"
   ................................................................................................................................................................................................................................................................^
emacs/lisp/textmodes/texinfmt.el:647:25: In call to looking-at: Unescaped literal `^' (pos 403)
  "\\(^@\\(direntry\\|lisp\\|smalllisp\\|example\\|smallexample\\|display\\|smalldisplay\\|format\\|smallformat\\|flushleft\\|flushright\\|menu\\|multitable\\|titlepage\\|iftex\\|ifhtml\\|tex\\|html\\)\\|^@\\(b{\\|bullet{\\|cite{\\|code{\\|email{\\|emph{\\|equiv{\\|error{\\|expansion{\\|file{\\|i{\\|inforef{\\|kbd{\\|key{\\|lisp{\\|minus{\\|point{\\|print{\\|pxref{\\|r{\\|ref{\\|result{\\|samp{\\|sc{\\|t{\\|TeX{\\|today{\\|url{\\|var{\\|w{\\|xref{\\|@-\\|@^\\|@`\\|@'\\|@\"\\|@,\\|@=\\|@~\\|@OE{\\|@oe{\\|@AA{\\|@aa{\\|@AE{\\|@ae{\\|@ss{\\|@questiondown{\\|@exclamdown{\\|@L{\\|@l{\\|@O{\\|@o{\\|@dotaccent{\\|@ubaraccent{\\|@d{\\|@H{\\|@ringaccent{\\|@tieaccent{\\|@u{\\|@v{\\|@dotless{\\)\\)"
   .........................................................................................................................................................................................................................................................................................................................................................................................................................................................................^
emacs/lisp/align.el:386:3: In align-rules-list (make-assignment): Duplicated `\' inside character alternative (pos 35)
  "^\\s-*\\w+\\(\\s-*\\):?=\\(\\s-*\\)\\([^\t\n \\\\]\\|$\\)"
   ...............................................^
emacs/lisp/comint.el:2084:34: In call to string-match: Unescaped literal `^' (pos 3)
  "\\(^^\\)\\1+"
   ....^
emacs/test/src/regex-emacs-tests.el:305:33: In call to re-search-backward: Duplicated `\' inside character alternative (pos 10)
  "\\(?:^\\|[^\\\\]\\)\\(?:\\\\\\\\\\)*\\\\.\\="
   .............^
emacs/test/src/regex-emacs-tests.el:322:31: In call to re-search-forward: Duplicated `\' inside character alternative (pos 10)
  "\\(?:^\\|[^\\\\]\\)\\(?:\\\\\\\\\\)*\\\\[Ss]"
   .............^