Visual feeback when using pathname expansion with globs or braces

[olivergondza]

Environment:

• fish, version 2.3.1
• rxvt-unicode (urxvt) v9.22 - released: 2016-01-23
• Linux arch 4.1.17-1-lts Need a history built-in #1 SMP Mon Feb 1 16:35:08 CET 2016 x86_64 GNU/Linux

Fish provides visual aids while typing the pathname and pressing <TAB> by listing all possible matches. Bash, for instance, does that even when glob or [...] is used. This is great help to check what the expression is going to evaluate to before the command is started.

Reproduction steps

In fish

$ mkdir test; cd test; touch 01 02 03 04
$ rm 0<TAB>
01  02  03  04
$ rm 0{1,2}<TAB> # No feedback
$ rm 0?<TAB> # No feedback
$ rm 0*<TAB> # No feedback

In bash

$ mkdir test; cd test; touch 01 02 03 04
$ rm 0<TAB>
01  02  03  04
$ rm 0[12]<TAB>
01  02
$ rm 0?<TAB>
01  02  03  04
$ rm 0*<TAB>
01  02  03  04

Expected results

It would be great if fish can be as useful as bash in these cases.

[faho]

This is basically the same thing as #954. We need to improve completion (and possibly highlighting) for these expansions.