Merge branch 'an/diff-index-doc' into maint

diff --git a/contrib/completion/git-prompt.sh b/contrib/completion/git-prompt.sh
index eaf5c369aacde207cbad4c9df9574e7b26634bb7..54e48299ae795b7a3a50cf09f850faa16b87e692 100644 (file)
--- a/contrib/completion/git-prompt.sh
+++ b/contrib/completion/git-prompt.sh
@@ -124,7 +124,7 @@ __git_ps1_show_upstream ()
                        fi
                        ;;
                svn-remote.*.url)
-                       svn_remote[ $((${#svn_remote[@]} + 1)) ]="$value"
+                       svn_remote[$((${#svn_remote[@]} + 1))]="$value"
                        svn_url_pattern+="\\|$value"
                        upstream=svn+git # default upstream is SVN if available, else git
                        ;;
@@ -146,10 +146,11 @@ __git_ps1_show_upstream ()
        svn*)
                # get the upstream from the "git-svn-id: ..." in a commit message
                # (git-svn uses essentially the same procedure internally)
-               local svn_upstream=($(git log --first-parent -1 \
+               local -a svn_upstream
+               svn_upstream=($(git log --first-parent -1 \
                                        --grep="^git-svn-id: \(${svn_url_pattern#??}\)" 2>/dev/null))
                if [[ 0 -ne ${#svn_upstream[@]} ]]; then
-                       svn_upstream=${svn_upstream[ ${#svn_upstream[@]} - 2 ]}
+                       svn_upstream=${svn_upstream[${#svn_upstream[@]} - 2]}
                        svn_upstream=${svn_upstream%@*}
                        local n_stop="${#svn_remote[@]}"
                        for ((n=1; n <= n_stop; n++)); do
@@ -279,6 +280,7 @@ __git_ps1 ()
                                step=$(cat "$g/rebase-apply/next")
                                total=$(cat "$g/rebase-apply/last")
                                if [ -f "$g/rebase-apply/rebasing" ]; then
+                                       b="$(cat "$g/rebase-apply/head-name")"
                                        r="|REBASE"
                                elif [ -f "$g/rebase-apply/applying" ]; then
                                        r="|AM"
@@ -295,6 +297,7 @@ __git_ps1 ()
                                r="|BISECTING"
                        fi
 
+                       test -n "$b" ||
                        b="$(git symbolic-ref HEAD 2>/dev/null)" || {
                                detached=yes
                                b="$(