[PATCH 07/14] completion: zsh: update installation instructions

[Felipe Contreras <felipe.contreras@gmail.com>]

Commit 0e5ed7cca3 wrongly changed the extension of the bash script
to .zsh. The extension doesn't really matter, but it confuses people.

I've changed the text to make it clear that your zsh script goes to
~/.zsh/_git, and the bash script to ~/.contrib/completion/git-completion.bash (or wherever
you want).

Also, update the default locations of the system bash-completion,
including the default bash-completion location for user scripts, and the
recommended way to find the system location (with pkg-config)

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
---
 contrib/completion/git-completion.zsh | 23 +++++++++++++----------
 1 file changed, 13 insertions(+), 10 deletions(-)

diff --git a/contrib/completion/git-completion.zsh b/contrib/completion/git-completion.zsh
index 2801f2f7c8..7f614d5854 100644
--- a/contrib/completion/git-completion.zsh
+++ b/contrib/completion/git-completion.zsh
@@ -4,17 +4,19 @@
 #
 # Copyright (c) 2012-2013 Felipe Contreras <felipe.contreras@gmail.com>
 #
-# You need git's bash completion script installed somewhere, by default it
-# would be the location bash-completion uses.
-#
-# If your script is somewhere else, you can configure it on your ~/.zshrc:
-#
-#  zstyle ':completion:*:*:git:*' script ~/.git-completion.zsh
-#
 # The recommended way to install this script is to copy to '~/.zsh/_git', and
 # then add the following to your ~/.zshrc file:
 #
 #  fpath=(~/.zsh $fpath)
+#
+# You need git's bash completion script installed. By default it will use
+# bash-completion's script.
+#
+# If your bash completion script is somewhere else, you can configure it on
+# your ~/.zshrc:
+#
+#  zstyle ':completion:*:*:git:*' script ~/.git-completion.bash
+#
 
 zstyle -T ':completion:*:*:git:*' tag-order && \
 	zstyle ':completion:*:*:git:*' tag-order 'common-commands'
@@ -25,9 +27,10 @@ if [ -z "$script" ]; then
 	local e
 	locations=(
 		"$(dirname ${funcsourcetrace[1]%:*})"/git-completion.bash
-		'/etc/bash_completion.d/git' # fedora, old debian
-		'/usr/share/bash-completion/completions/git' # arch, ubuntu, new debian
-		'/usr/share/bash-completion/git' # gentoo
+		"$HOME/.local/share/bash-completion/completions/git"
+		"$(pkg-config --variable=completionsdir bash-completion)"/git
+		'/usr/share/bash-completion/completions/git'
+		'/etc/bash_completion.d/git' # old debian
 		)
 	for e in $locations; do
 		test -f $e && script="$e" && break
-- 
2.22.0