Re: syntax for ?= in sh-mode

[Daniel Pfeiffer]

Saluton,

Dan Nicolaescu <address@hidden> skribis:

> address@hidden (Daniel Pfeiffer) writes:
>   > Dan Nicolaescu <address@hidden> skribis:
>   > 
>   > > Is there any reason that the syntax of ?= is symbol in sh-mode? 
>   > > Can it be changed to punctuation (or something else)? 
>   > > This causes problem with dabbrev.
>   > > 
>   > > For example, given the following file:
>   > > 
>   > > #!/bin/bash
>   > > MY_LONG_VAR=234
>   > > 
>   > > ANOTHER_VAR=${MY_LO
>   > > 
>   > > If the point is at the end (after _LO) and M-/ is pressed the
>   > > completion will be "${MY_LONG_VAR=234", which is not very helpful. 
>   > > Changing the syntax of ?= to be "." makes M-/ complete ${MY_LONG_VAR,
>   > > which is nicer. 
>   > 
>   > Fully agreed!
> 
> The patch below implements this. 
> Can somebody please check this in? 
> 
> 2004-09-10  Dan Nicolaescu  <address@hidden>
> 
>       * progmodes/sh-script.el (sh-mode-default-syntax-table): Set syntax
>       of = to "." (punctuation).
> ...

This doesn't go far enough.  I have looked at the syntax of sh-mode and shell:
it is inconsistent chaos. The two differ, and in one table groups like ; & |
or * ? are in different categories.  For sh-mode I'd suggest the following
changes:

$       word -> symbol
&       symbol -> punctuation
*       symbol -> punctuation
=       symbol -> punctuation
@       punctuation -> symbol
|       symbol -> punctuation

In shell this could be used as a basis for delimiting filenames, which would
only contain word and symbol.  Then finally something like TMP=/tm TAB could
give completion of /tm.

Then maybe we should try to make both modes use the same syntax table.  But I
don't know how this is best accomplished, since each is independent of the
other.  A shell-common.el might be the solution.

I would have used `shell-cd-regexp' for the change I just submitted to
compile.el if I could require it standalone.  Also completion would be very
welcome within M-! and M-|.

coralament / best Grötens / liebe Grüße / best regards / elkorajn salutojn
Daniel Pfeiffer

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