I use hothasktags [1] which works very well. The only problems are
sometimes with obscure extensions, where haskell-src-exts (which
hothasktags uses) can't parse the file, but that happens very rarely.
Regarding speed: it takes 2-3 s on about 250 source files totaling
about 25000 lines on my laptop.
Regards,
Erik
[1] https://github.com/luqui/hothasktags/
On Sun, Sep 25, 2011 at 15:41, Henry Laxen
Dear Group,
I have a simple question, that as far as I can tell, has never really been well answered. I would like to generate TAGS files for haskell source. Reading the http://www.haskell.org/haskellwiki/Tags page suggests using :etags in GHCI or hasktags, or gasbag. Of the three, hasktags comes closest to "working" but it has (for me) a major inconvenience, namely it finds both function definitions and type signatures, resulting in two TAGS entries such as:
./Main.hs,63 module Main where 6,7 main :: 24,25 main = 25,26
Now when I do an emacs find-tag (I use icicles) I will always have to choose which tag I want to visit, and the completion buffer contains something like:
main :: hs/Main.hs
main = hs/Main.hs
Granted, this is a minor (and very specialized) complaint, but if hasktags were to select only ONE of either the type signature (my first choice) or the function definition, (if no type signature) this annoyance would disappear.
I also tried using etags, which I think would work, but it seems to have one killer bug (feature), namely that it dies if it finds an uninterpreted import:
when (not is_interpreted) $ let mName = GHC.moduleNameString (GHC.moduleName m) in ghcError (CmdLineError ("module '" ++ mName ++ "' is not interpreted"))
I think it would work much better if it just warned you, instead of dying. This makes it unusable any time you import something precompiled.
Now some looking at the README of hasktags leads me to:
"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."
That makes me feel a little queasy.
A google search for hasktags igloo turns up http://hackage.haskell.org/trac/ghc/ticket/1508 whose title is "hasktags program needs replacement" which makes me feel even more queasy.
So I guess my question is, what are us disciples of "the one true editor" to do? Thanks in advance for you sage advice.
Best wishes, Henry Laxen
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