ctags language support for latex and bibtex

.ctags.txt

--langdef=latex
--langmap=latex:.tex .latex
--regex-latex=/^\\part[[:space:]]*(\[[^]]*\])?[[:space:]]*\{([^}]+)\}/PART \2/s,part/
--regex-latex=/^\\part[[:space:]]*\*[[:space:]]*\{([^}]+)\}/PART \1/s,part/
--regex-latex=/^\\chapter[[:space:]]*(\[[^]]*\])?[[:space:]]*\{([^}]+)\}/CHAP \2/s,chapter/
--regex-latex=/^\\chapter[[:space:]]*\*[[:space:]]*\{([^}]+)\}/CHAP \1/s,chapter/
--regex-latex=/^\\section[[:space:]]*(\[[^]]*\])?[[:space:]]*\{([^}]+)\}/\2/s,section/
--regex-latex=/^\\section[[:space:]]*\*[[:space:]]*\{([^}]+)\}/\1/s,section/
--regex-latex=/^\\subsection[[:space:]]*(\[[^]]*\])?[[:space:]]*\{([^}]+)\}/-\2/s,subsection/
--regex-latex=/^\\subsection[[:space:]]*\*[[:space:]]*\{([^}]+)\}/-\1/s,subsection/
--regex-latex=/^\\subsubsection[[:space:]]*(\[[^]]*\])?[[:space:]]*\{([^}]+)\}/--\2/s,subsubsection/
--regex-latex=/^\\subsubsection[[:space:]]*\*[[:space:]]*\{([^}]+)\}/--\1/s,subsubsection/
--regex-latex=/^\\includegraphics[[:space:]]*(\[[^]]*\])?[[:space:]]*(\[[^]]*\])?[[:space:]]*\{([^}]+)\}/\3/g,graphic/
--regex-latex=/^\\lstinputlisting[[:space:]]*(\[[^]]*\])?[[:space:]]*(\[[^]]*\])?[[:space:]]*\{([^}]+)\}/\3/i,listing/
--regex-latex=/\\label[[:space:]]*\{([^}]+)\}/\1/l,label/
--regex-latex=/\\bibitem[[:space:]]*\[([^]]*)\]\{([^}]+)\}/\1 \2/b,bibitem/

--langdef=bibtex
--langmap=bibtex:.bib
--regex-bibtex=/@string\{([^ "#%')(,=}{]+)/\1/s,BibTeX-Strings/i
--regex-bibtex=/@(article|book|booklet|inbook|incollection|inproceedings|manual|masterthesis|misc|phdthesis|proceedings|techreport|unpublished)\{([^,]+),/\2/e,BibTeX-Entries/i
--regex-bibtex=/[[:space:]]*author[[:space:]]*=[[:space:]]*("([^"]+)"|\{([^\}]+)\})[[:space:]]*,?[[:space:]]*$/\2\3/a,BibTeX-Authors/i
--regex-bibtex=/[[:space:]]*title[[:space:]]*=[[:space:]]*["\{](\{[:word:]+\}.+|.+)(["}][[:space:]]*,[[:space:]]*$|$)/\1/t,BibTeX-Titles/i