On 08/07/10 09:08, Michael Mossey wrote:
data PlayState = PlayState
{ playState_cursor :: Int
, playState_verts :: [Loc]
, playState_len :: Int
, playState_doc :: MusDoc
}
Notice how often the characters "playState_" get typed. This would be
a great situation for Emacs abbreviations. When you define an
abbreviation in Emacs, such as defining "xps" to expand to
"PlayState", emacs will watch for the characters xps. It will then
replace "xps" with "PlayState" when you type a non-alphanumeric
character following "xps". So if I type "xps." the moment I hit "." it
changes to "PlayState."
But I would have a hard time using this feature with "playState_"
because it is always followed by an alphanumeric character.
What about auto-completion? With that set of definitions, typing
pl<expand-key> should give you playState_ (it expands to the longest
unambigious expansion), and adding c<expand-key> should give you
playState_cursor. So you get the full thing for about five keystrokes,
without any worrying about alphanumeric vs non-alphanumeric.
I have completion bound to tab in emacs (a la tab completion in the
shell): "(global-set-key (kbd "TAB") 'dabbrev-expand)" and am pretty
happy with this for Haskell coding. dabbrev-expand does not perform any
Haskell-specific context-sensitive completion -- it just picks words out
of open buffers, but I've found this to work to my satisfaction. One
additional nice thing is that after a completed word, if you press space
then <expand-key> again, it inserts the most common next word after your
previous completion based on open buffers. Since in Haskell function
calls and types are separated by spaces, this allows you to quickly
complete common "phrases" from your Haskell code.
Thanks,
Neil.
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