Unexpected character class of underscore

[tobiasBora]

Hello,

First thank you for your work. However I have a problem with the underscore: in (nearly) all major modes of emacs, '_' isn't seen as a classical letter. Like that when you have:

my_variable_name

and when you do M-x forward-word or M-x backward-kill-word, you will jump/delete all the word. Usually in emacs mode when you do so you jump only "name". The above example should become:

 my_variable_

I tried to change the table like that:

(modify-syntax-entry ?_ "-")

However this leads to another problem: Now in completion (M-/) my_variable_name is seen as three separate strings. So

my_var

will expands into

my_variable

instead of

my_variable_name

In all emacs mode, my_variable_name is seen as a single string for expansion, but as separate words for moving/deleting, and I don't understand why haskell change this good practice.

Is there any reason to proceed like this ? Do you plan to come back to a more conventional approach ? If not, do you have solution for people like me that would like to keep the original behaviour ?

Thank you,

TobiasBora.

[tobiasBora]

I found a workaround but it's not really practical:

(add-hook 'haskell-mode-hook
      (lambda ()
    (modify-syntax-entry ?_  "-" haskell-mode-syntax-table)
    (setq dabbrev-abbrev-char-regexp "\\sw\\|\\s_")))

By the way if anyone knows how I could achieve to do Ctrl-Backspace with camelCase I'm interested in it.

-- EDIT --
In emacs just active (subword-mode 1) or M-x subword-mode.

[gracjan]

@tobiasBora: there you go, fixed.

[tobiasBora]

Thank you !