Difference between revisions of "Emacs/Project navigation"

Revision as of 18:48, 28 May 2012

Emacs tags/hasktags

Get hasktags

ETAGS allows jumping to the definition of names at the point via M-.. To generate tags (a TAGS file) for a project, you need hasktags.

$ cabal install hasktags

Calling directly

Run M-x haskell-process-generate-tags to generate the TAGS file of the current session directory.

You can now use M-. on a name in a Haskell buffer which will jump directly to its definition. You can also now use it for autocompletion.

On save

Provided you have properly bound C-x C-s, you just need to enable tags generation on save:

(custom-set-variables
 '(haskell-tags-on-save t))

or

(setq haskell-tags-on-save t)

or just M-x customize-group haskell and it's in there.

Speedbar

Emacs has a SpeedBar which works quite nice together with haskell-mode and also detects syntactic elements such as variables, imports, instances, classes.

Just add

   (require 'speedbar)
   (speedbar-add-supported-extension ".hs")

to your .emacs file and fire up speedbar with M-x speedbar.

@@ Line 1: / Line 1: @@
+== Emacs tags/hasktags ==
-[[Category:Emacs|*]]
-{{Haskell infobox}}
+=== Get hasktags ===
+ETAGS allows jumping to the definition of names at the point via <code>M-.</code>.  To generate tags (a TAGS file) for a project, you need [http://hackage.haskell.org/package/hasktags hasktags].
+ $ cabal install hasktags
+=== Calling directly ===
+Run <code>M-x haskell-process-generate-tags</code> to generate the TAGS file of the [[Sessions|current session directory.]]
+You can now use <code>M-.</code> on a name in a Haskell buffer which will jump directly to its definition. You can also now use it for [[Emacs/Autocompletion|autocompletion]].
+=== On save ===
+Provided you have [[Emacs/Keybindings_and_simple_usage#Rebind_C-x_C-s|properly bound <code>C-x C-s</code>]], you just need to enable tags generation on save:
+ (custom-set-variables
+  '(haskell-tags-on-save t))
+or
+ (setq haskell-tags-on-save t)
+or just <code>M-x customize-group haskell</code> and it's in there.
 == Speedbar ==