Re: About abbrevs and spaces at end of line

["Andreas Röhler" <andreas.roehler@easy-emacs.de>]

Am 09.12.2013 22:46, schrieb Harry Putnam:
> Is there some smooth way to avoid having a space at the end of line
> when activating an abbrev as the last thing done before newline?
>
> For example:  I have `tru' (in Cperl abbrev table) set like so
> tru   "\"TRUE\";"
>
> Which enters "TRUE";<spc> (If I invoked it with the space bar)
>
> I can avoid it by using an <ENTER> using the RET bar and leaving a
> newline.
>
> But when editing perl code, I often am working between {} where a
> stray newline will leave an unsightly empty line in a clump of code.
>
> Using the space bar to invoke (when in cperl-mode and many other
> modes) leaves my code with what appears to be underscores (_) showing
> where the spc is.
>
> I'm not real sure where they come from.  They are not really
> underscores, but markers left by the editor(?) that do not appear if
> you print it (I guess).  Any way, that is another matter for a
> different thread.
>
> The short and long is: Invoking with spc leaves unsightly marks like
> an underscore if done at the end of a line and invoking with <RET> is
> not always desirable if a new line is not needed.
>
> Before I tangle myself up any further.... I'd like to know if there is
> a smooth way to create an abbrev that somehow avoids leaving that spc
> that was used to invoke it.  Somehow backing the cursor up 1 space
> after invocation or the like.
>
> I can do it by creating an elisp 'skeleton' that does the job by using
> the proper code to control where the cursor lands, and then associating
> that 'skeleton' to my 'tru' abbrev in the cperl-table.  Yes. that
> works, but requires a fair bit of typing to create.
>
> I'd need to edit .emacs to type out the 'skeleton' (or some other
> sourced file) and then the abbrev table to type out the linked abbrev.
>
> -------        ---------       ---=---       ---------      --------
>
> I have visions of some tricky way of setting up an abbrev with hardly
> any more effort than the normal
>
>     M-x edit-abbrevs <RET>
>
>     "tru"       0          "\"TRUE\";"
>
> In the cperl-table, then pressing C-c
>
> Where I only need to edit the cperl abbrev table.
>
>
>
>

Problem results from binding abbrev-expand to SPACE.
Abbrev is expanded, than SPACE is inserted, as you typed it.

Solution: abbrev-mode off. Use any other key to M-x expand-abbrev RET.
This will expand it, but not insert a space.

Andreas