Teach bash about git-repo-config.

This is a really ugly completion script for git-repo-config, but it has
some nice properties.  I've added all of the documented configuration
parameters from Documentation/config.txt to the script, allowing the
user to complete any standard configuration parameter name.

We also have some intelligence for the remote.*.* and branch.*.* keys
by completing not only the key name (e.g. remote.origin) but also the
values (e.g. remote.*.fetch completes to the branches available on the
corresponding remote).

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index a9c456f61b66201d6e2dcf105619ea71f701f6ea..73c67691c928bcb7fa0b72e0179f74df11a087c2 100755 (executable)
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -43,6 +43,27 @@ __git_ps1 ()
        fi
 }
 
+__git_heads ()
+{
+       local cmd i is_hash=y dir="${1:-$(__gitdir)}"
+       if [ -d "$dir" ]; then
+               for i in $(git --git-dir="$dir" \
+                       for-each-ref --format='%(refname)' \
+                       refs/heads ); do
+                       echo "${i#refs/heads/}"
+               done
+               return
+       fi
+       for i in $(git-ls-remote "$dir" 2>/dev/null); do
+               case "$is_hash,$i" in
+               y,*) is_hash=n ;;
+               n,*^{}) is_hash=y ;;
+               n,refs/heads/*) is_hash=y; echo "${i#refs/heads/}" ;;
+               n,*) is_hash=y; echo "$i" ;;
+               esac
+       done
+}
+
 __git_refs ()
 {
        local cmd i is_hash=y dir="${1:-$(__gitdir)}"
@@ -91,6 +112,23 @@ __git_refs2 ()
        done
 }
 
+__git_refs_remotes ()
+{
+       local cmd i is_hash=y
+       for i in $(git-ls-remote "$1" 2>/dev/null); do
+               case "$is_hash,$i" in
+               n,refs/heads/*)
+                       is_hash=y
+                       echo "$i:refs/remotes/$1/${i#refs/heads/}"
+                       ;;
+               y,*) is_hash=n ;;
+               n,*^{}) is_hash=y ;;
+               n,refs/tags/*) is_hash=y;;
+               n,*) is_hash=y; ;;
+               esac
+       done
+}
+
 __git_remotes ()
 {
        local i ngoff IFS=$'\n' d="$(__gitdir)"
@@ -500,6 +538,119 @@ _git_rebase ()
        COMPREPLY=($(compgen -W "$(__git_refs)" -- "$cur"))
 }
 
+_git_repo_config ()
+{
+       local cur="${COMP_WORDS[COMP_CWORD]}"
+       local prv="${COMP_WORDS[COMP_CWORD-1]}"
+       case "$prv" in
+       branch.*.remote)
+               COMPREPLY=($(compgen -W "$(__git_remotes)" -- "$cur"))
+               return
+               ;;
+       branch.*.merge)
+               COMPREPLY=($(compgen -W "$(__git_refs)" -- "$cur"))
+               return
+               ;;
+       remote.*.fetch)
+               local remote="${prv#remote.}"
+               remote="${remote%.fetch}"
+               COMPREPLY=($(compgen -W "$(__git_refs_remotes "$remote")" \
+                       -- "$cur"))
+               return
+               ;;
+       remote.*.push)
+               local remote="${prv#remote.}"
+               remote="${remote%.push}"
+               COMPREPLY=($(compgen -W "$(git --git-dir="$(__gitdir)" \
+                       for-each-ref --format='%(refname):%(refname)' \
+                       refs/heads)" -- "$cur"))
+               return
+               ;;
+       *.*)
+               COMPREPLY=()
+               return
+               ;;
+       esac
+       case "$cur" in
+       --*)
+               COMPREPLY=($(compgen -W "
+                       --global --list --replace-all
+                       --get --get-all --get-regexp
+                       --unset --unset-all
+                       " -- "$cur"))
+               return
+               ;;
+       branch.*.*)
+               local pfx="${cur%.*}."
+               cur="${cur##*.}"
+               COMPREPLY=($(compgen -P "$pfx" -W "remote merge" -- "$cur"))
+               return
+               ;;
+       branch.*)
+               local pfx="${cur%.*}."
+               cur="${cur#*.}"
+               COMPREPLY=($(compgen -P "$pfx" -S . \
+                       -W "$(__git_heads)" -- "$cur"))
+               return
+               ;;
+       remote.*.*)
+               local pfx="${cur%.*}."
+               cur="${cur##*.}"
+               COMPREPLY=($(compgen -P "$pfx" -W "url fetch push" -- "$cur"))
+               return
+               ;;
+       remote.*)
+               local pfx="${cur%.*}."
+               cur="${cur#*.}"
+               COMPREPLY=($(compgen -P "$pfx" -S . \
+                       -W "$(__git_remotes)" -- "$cur"))
+               return
+               ;;
+       esac
+       COMPREPLY=($(compgen -W "
+               apply.whitespace
+               core.fileMode
+               core.gitProxy
+               core.ignoreStat
+               core.preferSymlinkRefs
+               core.logAllRefUpdates
+               core.repositoryFormatVersion
+               core.sharedRepository
+               core.warnAmbiguousRefs
+               core.compression
+               core.legacyHeaders
+               i18n.commitEncoding
+               diff.color
+               diff.renameLimit
+               diff.renames
+               pager.color
+               status.color
+               log.showroot
+               show.difftree
+               showbranch.default
+               whatchanged.difftree
+               http.sslVerify
+               http.sslCert
+               http.sslKey
+               http.sslCAInfo
+               http.sslCAPath
+               http.maxRequests
+               http.lowSpeedLimit http.lowSpeedTime
+               http.noEPSV
+               pack.window
+               repack.useDeltaBaseOffset
+               pull.octopus pull.twohead
+               merge.summary
+               receive.unpackLimit
+               receive.denyNonFastForwards
+               user.name user.email
+               tar.umask
+               gitcvs.enabled
+               gitcvs.logfile
+               branch. remote.
+       " -- "$cur"))
+}
+
 _git_reset ()
 {
        local cur="${COMP_WORDS[COMP_CWORD]}"
@@ -552,6 +703,7 @@ _git ()
        pull)        _git_pull ;;
        push)        _git_push ;;
        rebase)      _git_rebase ;;
+       repo-config) _git_repo_config ;;
        reset)       _git_reset ;;
        show)        _git_log ;;
        show-branch) _git_log ;;
@@ -585,6 +737,7 @@ complete -o default            -F _git_name_rev git-name-rev
 complete -o default -o nospace -F _git_pull git-pull
 complete -o default -o nospace -F _git_push git-push
 complete -o default            -F _git_rebase git-rebase
+complete -o default            -F _git_repo_config git-repo-config
 complete -o default            -F _git_reset git-reset
 complete -o default            -F _git_log git-show
 complete -o default -o nospace -F _git_log git-show-branch
@@ -606,6 +759,7 @@ complete -o default -o nospace -F _git_ls_tree git-ls-tree.exe
 complete -o default            -F _git_merge_base git-merge-base.exe
 complete -o default            -F _git_name_rev git-name-rev.exe
 complete -o default -o nospace -F _git_push git-push.exe
+complete -o default            -F _git_repo_config git-repo-config
 complete -o default -o nospace -F _git_log git-show.exe
 complete -o default -o nospace -F _git_log git-show-branch.exe
 complete -o default -o nospace -F _git_log git-whatchanged.exe