Porcelain scripts: Rewrite cryptic "needs update" error message

Although Git interally has the facility to differentiate between
porcelain and plubmbing commands and appropriately print errors,
several shell scripts invoke plubming commands triggering cryptic
plumbing errors to be displayed on a porcelain interface. This patch
replaces the "needs update" message in git-pull and git-rebase, when
`git update-index` is run, with a more friendly message.

Reported-by: Joshua Jensen <jjensen@workspacewhiz.com>
Reported-by: Thore Husfeldt <thore.husfeldt@gmail.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/git-pull.sh b/git-pull.sh
index 8eb74d45debe7ab2bd2cc9b5ed57b1ba49d94bdb..20a3bbea07c259ec1f19353b2888fde20e8b67da 100755 (executable)
--- a/git-pull.sh
+++ b/git-pull.sh
@@ -201,10 +201,7 @@ test true = "$rebase" && {
                        die "updating an unborn branch with changes added to the index"
                fi
        else
-               git update-index --ignore-submodules --refresh &&
-               git diff-files --ignore-submodules --quiet &&
-               git diff-index --ignore-submodules --cached --quiet HEAD -- ||
-               die "refusing to pull with rebase: your working tree is not up-to-date"
+               require_clean_work_tree "pull with rebase" "Please commit or stash them."
        fi
        oldremoteref= &&
        . git-parse-remote &&

diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh
index a27952d9fdfb517f684b7d304831bf74d0ce237b..4d8a2a0e4e2b6f5f70e75269dde082d13838b5f2 100755 (executable)
--- a/git-rebase--interactive.sh
+++ b/git-rebase--interactive.sh
@@ -153,14 +153,6 @@ run_pre_rebase_hook () {
        fi
 }
 
-require_clean_work_tree () {
-       # test if working tree is dirty
-       git rev-parse --verify HEAD > /dev/null &&
-       git update-index --ignore-submodules --refresh &&
-       git diff-files --quiet --ignore-submodules &&
-       git diff-index --cached --quiet HEAD --ignore-submodules -- ||
-       die "Working tree is dirty"
-}
 
 ORIG_REFLOG_ACTION="$GIT_REFLOG_ACTION"
 
@@ -557,7 +549,7 @@ do_next () {
                        exit "$status"
                fi
                # Run in subshell because require_clean_work_tree can die.
-               if ! (require_clean_work_tree)
+               if ! (require_clean_work_tree "rebase")
                then
                        warn "Commit or stash your changes, and then run"
                        warn
@@ -768,7 +760,7 @@ first and then run 'git rebase --continue' again."
 
                record_in_rewritten "$(cat "$DOTEST"/stopped-sha)"
 
-               require_clean_work_tree
+               require_clean_work_tree "rebase"
                do_rest
                ;;
        --abort)
@@ -866,7 +858,7 @@ first and then run 'git rebase --continue' again."
 
                comment_for_reflog start
 
-               require_clean_work_tree
+               require_clean_work_tree "rebase" "Please commit or stash them."
 
                if test ! -z "$1"
                then

diff --git a/git-rebase.sh b/git-rebase.sh
index e5df23bb8350d6d155bdf1ac9a5be4c9fdc29326..988b3d8142c80fc58008025b4301c303502ce1a2 100755 (executable)
--- a/git-rebase.sh
+++ b/git-rebase.sh
@@ -416,19 +416,7 @@ else
        fi
 fi
 
-# The tree must be really really clean.
-if ! git update-index --ignore-submodules --refresh > /dev/null; then
-       echo >&2 "cannot rebase: you have unstaged changes"
-       git diff-files --name-status -r --ignore-submodules -- >&2
-       exit 1
-fi
-diff=$(git diff-index --cached --name-status -r --ignore-submodules HEAD --)
-case "$diff" in
-?*)    echo >&2 "cannot rebase: your index contains uncommitted changes"
-       echo >&2 "$diff"
-       exit 1
-       ;;
-esac
+require_clean_work_tree "rebase" "Please commit or stash them."
 
 if test -z "$rebase_root"
 then

diff --git a/git-sh-setup.sh b/git-sh-setup.sh
index ae031a1375e9c674d80b9fa3d3d3b76780deaf9f..aa16b8356507e4e669ee5c4cb4b5a667942d559e 100644 (file)
--- a/git-sh-setup.sh
+++ b/git-sh-setup.sh
@@ -145,6 +145,35 @@ require_work_tree () {
        die "fatal: $0 cannot be used without a working tree."
 }
 
+require_clean_work_tree () {
+       git rev-parse --verify HEAD >/dev/null || exit 1
+       git update-index -q --ignore-submodules --refresh
+       err=0
+
+       if ! git diff-files --quiet --ignore-submodules
+       then
+               echo >&2 "Cannot $1: You have unstaged changes."
+               err=1
+       fi
+
+       if ! git diff-index --cached --quiet --ignore-submodules HEAD --
+       then
+               if [ $err = 0 ]
+               then
+                   echo >&2 "Cannot $1: Your index contains uncommitted changes."
+               else
+                   echo >&2 "Additionally, your index contains uncommitted changes."
+               fi
+               err=1
+       fi
+
+       if [ $err = 1 ]
+       then
+               test -n "$2" && echo >&2 "$2"
+               exit 1
+       fi
+}
+
 get_author_ident_from_commit () {
        pick_author_script='
        /^author /{