view tests/test-churn @ 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

#!/bin/sh

echo "[extensions]" >> $HGRCPATH
echo "churn=" >> $HGRCPATH

echo % create test repository
hg init repo
cd repo
echo a > a
hg ci -Am adda -u user1 -d 6:00
echo b >> a
echo b > b
hg ci -m changeba -u user2 -d 9:00 a
hg ci -Am addb -u user2 -d 9:30
echo c >> a
echo c >> b
echo c > c
hg ci -m changeca -u user3 -d 12:00 a
hg ci -m changecb -u user3 -d 12:15 b
hg ci -Am addc -u user3 -d 12:30
mkdir -p d/e
echo abc > d/e/f1.txt
hg ci -Am "add d/e/f1.txt" -u user1 -d 12:45 d/e/f1.txt
mkdir -p d/g
echo def > d/g/f2.txt
hg ci -Am "add d/g/f2.txt" -u user1 -d 13:00 d/g/f2.txt

echo % churn separate directories
cd d
hg churn e
echo % churn all
hg churn
echo % churn excluding one dir
hg churn -X e
echo % churn up to rev 2
hg churn -r :2
cd ..
echo % churn with aliases
cat > ../aliases <<EOF
user1 alias1
user3 alias3
EOF
hg churn --aliases ../aliases
echo % churn with .hgchurn
mv ../aliases .hgchurn
hg churn
rm .hgchurn
echo % churn with column specifier
COLUMNS=40 hg churn
echo % churn by hour
hg churn -f '%H' -s

echo % churn with separated added/removed lines
hg rm d/g/f2.txt
hg ci -Am "removed d/g/f2.txt" -u user1 -d 14:00 d/g/f2.txt
hg churn --diffstat
echo % churn --diffstat with color
hg --config extensions.color= churn --config color.mode=ansi \
    --diffstat --color=always

echo % changeset number churn
hg churn -c

echo 'with space = no-space' >> ../aliases
echo a >> a
hg commit -m a -u 'with space' -d 15:00
echo % churn with space in alias
hg churn --aliases ../aliases -r tip

cd ..

# issue 833: ZeroDivisionError
hg init issue-833
cd issue-833
touch foo
hg ci -Am foo
# this was failing with a ZeroDivisionError
hg churn
cd ..