hasktags: a tool to generate tag files for vim and emacs What is it for? A tag file is a index containing key items of your project such as - function names - module names - data declarations - ... so that you can find / jump to them fast. HOWTO (GENERATING TAG FILES): ghc --make hasktags.hs I've been using this bash function or something similar for a long time. It may be cumbersome but works: runHaskTagsVim() { # use --etags instead of --ctags for emacs hasktags --ignore-close-implementation --ctags `find . -type f -name \"*.*hs\"`; sort tags } HOWTO (USING TAG FILES): VIM: let tags+=tagifle " tags,TAGS is the default setting so probably you don't have to do anything :tjump foo<tab> or such. See :h tags NEdit: Load the "tags" file using File/Load Tags File. Use "Ctrl-D" to search for a tag. XEmacs/Emacs: Load the "TAGS" file using "visit-tags-table" Use "M-." to search for a tag. jedit: There is a plugin run test cases: cd testcases; sh test.sh history: In the past this tool was distributed with ghc. I forked and added some features. hasktags itself was moved out of the ghc repository. Then I only verified that my fork finds at least as much tags as the one forked by Igloo.