Merge branch 'sp/maint-bash-completion-optim' into maint

* sp/maint-bash-completion-optim:
  bash completion: Resolve git show ref:path<tab> losing ref: portion
  bash completion: Append space after file names have been completed
  bash completion: Don't offer "a.." as a completion for "a."
  bash completion: Improve responsiveness of git-log completion

contrib/completion/git-completion.bash

@@ -45,6 +45,11 @@
 #       git@vger.kernel.org
 #
 
+case "$COMP_WORDBREAKS" in
+*:*) : great ;;
+*)   COMP_WORDBREAKS="$COMP_WORDBREAKS:"
+esac
+
 __gitdir ()
 {
 	if [ -z "$1" ]; then
@@ -114,9 +119,20 @@ __git_ps1 ()
 	fi
 }
 
+__gitcomp_1 ()
+{
+	local c IFS=' '$'\t'$'\n'
+	for c in $1; do
+		case "$c$2" in
+		--*=*) printf %s$'\n' "$c$2" ;;
+		*.)    printf %s$'\n' "$c$2" ;;
+		*)     printf %s$'\n' "$c$2 " ;;
+		esac
+	done
+}
+
 __gitcomp ()
 {
-	local all c s=$'\n' IFS=' '$'\t'$'\n'
 	local cur="${COMP_WORDS[COMP_CWORD]}"
 	if [ $# -gt 2 ]; then
 		cur="$3"
@@ -124,21 +140,14 @@ __gitcomp ()
 	case "$cur" in
 	--*=)
 		COMPREPLY=()
-		return
 		;;
 	*)
-		for c in $1; do
+		local IFS=$'\n'
-			case "$c$4" in
+		COMPREPLY=($(compgen -P "$2" \
-			--*=*) all="$all$c$4$s" ;;
+			-W "$(__gitcomp_1 "$1" "$4")" \
-			*.)    all="$all$c$4$s" ;;
+			-- "$cur"))
-			*)     all="$all$c$4 $s" ;;
-			esac
-		done
 		;;
 	esac
-	IFS=$s
-	COMPREPLY=($(compgen -P "$2" -W "$all" -- "$cur"))
-	return
 }
 
 __git_heads ()
@@ -290,9 +299,23 @@ __git_complete_file ()
 			ls="$ref"
 			;;
 	    esac
+
+		case "$COMP_WORDBREAKS" in
+		*:*) : great ;;
+		*)   pfx="$ref:$pfx" ;;
+		esac
+
+		local IFS=$'\n'
 		COMPREPLY=($(compgen -P "$pfx" \
 			-W "$(git --git-dir="$(__gitdir)" ls-tree "$ls" \
-				| sed '/^100... blob /s,^.*	,,
+				| sed '/^100... blob /{
+				           s,^.*	,,
+				           s,$, ,
+				       }
+				       /^120000 blob /{
+				           s,^.*	,,
+				           s,$, ,
+				       }
 				       /^040000 tree /{
 				           s,^.*	,,
 				           s,$,/,
@@ -320,9 +343,6 @@ __git_complete_revlist ()
 		cur="${cur#*..}"
 		__gitcomp "$(__git_refs)" "$pfx" "$cur"
 		;;
-	*.)
-		__gitcomp "$cur."
-		;;
 	*)
 		__gitcomp "$(__git_refs)"
 		;;
@@ -691,7 +711,12 @@ _git_fetch ()
 	*)
 		case "$cur" in
 		*:*)
-			__gitcomp "$(__git_refs)" "" "${cur#*:}"
+			local pfx=""
+			case "$COMP_WORDBREAKS" in
+			*:*) : great ;;
+			*)   pfx="${cur%%:*}:" ;;
+			esac
+			__gitcomp "$(__git_refs)" "$pfx" "${cur#*:}"
 			;;
 		*)
 			local remote
@@ -864,7 +889,14 @@ _git_push ()
 			git-push)  remote="${COMP_WORDS[1]}" ;;
 			git)       remote="${COMP_WORDS[2]}" ;;
 			esac
-			__gitcomp "$(__git_refs "$remote")" "" "${cur#*:}"
+
+			local pfx=""
+			case "$COMP_WORDBREAKS" in
+			*:*) : great ;;
+			*)   pfx="${cur%%:*}:" ;;
+			esac
+
+			__gitcomp "$(__git_refs "$remote")" "$pfx" "${cur#*:}"
 			;;
 		+*)
 			__gitcomp "$(__git_refs)" + "${cur#+}"