# HG changeset patch # User Gregory Szorc # Date 2017-06-26 05:20:37 # Node ID 99ce2f586cd4718fae25716e2858744da92c4524 # Parent 59c135bb31bcb3ac7f805eb6b35bf28149897703 show: config option to register aliases for views As part of using `hg show` in my daily workflow, I've found it slightly annoying to have to type full view names, complete with a space. I've locally registered an alias for "swork = show work." I think others will have this same complaint and could benefit from some automation to streamline the creation of aliases. So, this commit introduces a config option that allows `hg show` views to be automatically aliased using a given prefix. e.g. a value of "s" will automatically register "swork" and "sbookmarks." Multiple values can be given for ultimate flexibility. This arguably isn't needed now. But since we don't register aliases if there will be a collision and we're bound to have a collision, it makes sense to allow multiple prefixes so specific views can avoid collisions by using different prefixes. diff --git a/hgext/show.py b/hgext/show.py --- a/hgext/show.py +++ b/hgext/show.py @@ -10,6 +10,19 @@ This extension provides the :hg:`show` command, which provides a central command for displaying commonly-accessed repository data and views of that data. + +The following config options can influence operation. + +``commands`` +------------ + +``show.aliasprefix`` + List of strings that will register aliases for views. e.g. ``s`` will + effectively set config options ``alias.s = show `` for all + views. i.e. `hg swork` would execute `hg show work`. + + Aliases that would conflict with existing registrations will not be + performed. """ from __future__ import absolute_import @@ -18,6 +31,7 @@ from mercurial.i18n import _ from mercurial.node import nullrev from mercurial import ( cmdutil, + commands, error, formatter, graphmod, @@ -218,6 +232,25 @@ def showwork(ui, repo, displayer): ui.setconfig('experimental', 'graphshorten', True) cmdutil.displaygraph(ui, repo, revdag, displayer, graphmod.asciiedges) +def extsetup(ui): + # Alias `hg ` to `hg show `. + for prefix in ui.configlist('commands', 'show.aliasprefix'): + for view in showview._table: + name = '%s%s' % (prefix, view) + + choice, allcommands = cmdutil.findpossible(name, commands.table, + strict=True) + + # This alias is already a command name. Don't set it. + if name in choice: + continue + + # Same for aliases. + if ui.config('alias', name): + continue + + ui.setconfig('alias', name, 'show %s' % view, source='show') + # Adjust the docstring of the show command so it shows all registered views. # This is a bit hacky because it runs at the end of module load. When moved # into core or when another extension wants to provide a view, we'll need diff --git a/tests/test-show.t b/tests/test-show.t --- a/tests/test-show.t +++ b/tests/test-show.t @@ -127,4 +127,42 @@ JSON works with no bookmarks [ ] +commands.show.aliasprefix aliases values to `show ` + + $ hg --config commands.show.aliasprefix=s sbookmarks + (no bookmarks set) + + $ hg --config commands.show.aliasprefix=sh shwork + @ 7b570 commit for book2 + o b757f commit for book1 + o ba592 initial + + $ hg --config commands.show.aliasprefix='s sh' swork + @ 7b570 commit for book2 + o b757f commit for book1 + o ba592 initial + + $ hg --config commands.show.aliasprefix='s sh' shwork + @ 7b570 commit for book2 + o b757f commit for book1 + o ba592 initial + +The aliases don't appear in `hg config` + + $ hg --config commands.show.aliasprefix=s config alias + [1] + +Doesn't overwrite existing alias + + $ hg --config alias.swork='log -r .' --config commands.show.aliasprefix=s swork + changeset: 2:7b5709ab64cb + tag: tip + user: test + date: Thu Jan 01 00:00:00 1970 +0000 + summary: commit for book2 + + + $ hg --config alias.swork='log -r .' --config commands.show.aliasprefix=s config alias + alias.swork=log -r . + $ cd ..