mike/mgsh
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases 4 Wiki Activity

Complete aliases that expand to a shell escape

Browse Source 
`alias ll '!ls -la'` makes everything after `ll` a shell argument just as
surely as typing the `!` does, but Tab there still went to the builtin
command tree and found nothing. The dispatch now asks what a line will
turn into rather than how it starts: a '!' escape, or a name that is not a
builtin and resolves to an alias whose body starts with '!'.

Only the arguments complete — the command word is fixed by the alias
body, so `ll vi` offers the file, never the editor. An alias to a builtin
stays with the builtin tree.

Only the alias itself is inspected, not what its expansion might expand
to in turn: an alias chain can rewrite its own arguments, and guessing at
that would offer candidates for a command line other than the one being
built.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
mike
2026-07-26 18:28:35 +02:00
co-authored by Claude Opus 5
parent 2acca170e6
commit 0d0d28560e
5 changed files with 142 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files
README.md
+14 -2
View File
@@ -54,8 +54,8 @@ project, its git branch and a `*` dirty marker:
Features: command history (`~/.mgsh_history`), Tab completion (commands, local
projects for `cd`/`open`, server repos for `clone`/`show`, branches/tags for
`checkout`/`tag`, mirror targets for `pushremote`/`release`, filesystem paths for
`dist`, and shell-style completion after `!`), and colored `list`/`log`/error
output.
`dist`, and shell-style completion after `!` and for aliases that expand to
one), and colored `list`/`log`/error output.
The server repository list is fetched once per session on the first Tab that
needs it; `rescan` refreshes it (and reloads the configuration).
@@ -84,6 +84,18 @@ until the prefix asks for one.
< src/myproject > !gre<Tab> -> grep gresource
```
An alias that expands to a shell escape completes the same way, because its
arguments end up as shell arguments:
```
alias ll '!ls -la'
< src/myproject > ll ma<Tab> -> ll main
```
Only the alias's arguments complete, never its first word — the command is
fixed by the alias body. An alias to a builtin (`alias co 'checkout $1'`) is not
a shell line and is left alone.
Word splitting for completion is by whitespace only; quotes and backslash
escapes are left to the shell that runs the line.