view tests/test-eol-update.out @ 11989:f853873fc66d

aliases: provide more flexible ways to work with shell alias arguments

This patch changes the functionality of shell aliases to add more powerful
options for working with shell alias arguments.

First: the alias name + arguments to a shell alias are set as an HG_ARGS
environment variable, delimited by spaces. This matches the behavior of hooks.

Second: any occurrences of "$@" (without quotes) are replaced with the
arguments, separated by spaces. This happens *before* the alias gets to the shell.

Third: any positive numeric variables ("$1", "$2", etc) are replaced with the
appropriate argument, indexed from 1. "$0" is replaced with the name of the
alias. Any "extra" numeric variables are replaced with an empty string.  This
happens *before* the alias gets to the shell.

These changes allow for more flexible shell aliases:

    [alias]
    echo = !echo $@
    count = !hg log -r "$@" --template='.' | wc -c | sed -e 's/ //g'
    qqueuemv = !mv "`hg root`/.hg/patches-$1" "`hg root`/.hg/patches-$2"

In action:

    $ hg echo foo
    foo

    $ hg count 'branch(default)'
    901

    $ hg count 'branch(stable) and keyword(fixes)'
    102

    $ hg qqueuemv myfeature somefeature

# ==== setup repository ====
% hg init
adding .hgeol
adding a.txt

% hg clone repo repo-LF
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
% printrepr.py a.txt (before)
first\r
second\r
third\r
% printrepr.py a.txt (after)
first
third
% hg diff
diff --git a/a.txt b/a.txt
--- a/a.txt
+++ b/a.txt
@@ -1,3 +1,2 @@
 first\r
-second\r
 third\r
% hg update 0
merging a.txt
1 files updated, 1 files merged, 0 files removed, 0 files unresolved
% printrepr.py a.txt
first\r
third\r
% hg diff
diff --git a/a.txt b/a.txt
--- a/a.txt
+++ b/a.txt
@@ -1,3 +1,2 @@
 first
-second
 third

% hg clone repo repo-CRLF
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
% printrepr.py a.txt (before)
first\r
second\r
third\r
% printrepr.py a.txt (after)
first\r
third\r
% hg diff
diff --git a/a.txt b/a.txt
--- a/a.txt
+++ b/a.txt
@@ -1,3 +1,2 @@
 first\r
-second\r
 third\r
% hg update 0
merging a.txt
1 files updated, 1 files merged, 0 files removed, 0 files unresolved
% printrepr.py a.txt
first\r
third\r
% hg diff
diff --git a/a.txt b/a.txt
--- a/a.txt
+++ b/a.txt
@@ -1,3 +1,2 @@
 first
-second
 third