rebase -i: use full object name internally throughout the script

In earlier days, the abbreviated commit object name shown to the end
users were generated with hardcoded --abbrev=7; 56895038 (rebase
-i: respect core.abbrev, 2013-09-28) tried to make it honor the user
specified core.abbrev, but it missed the very initial invocation of
the editor.

These days, we try to use the full 40-hex object names internally to
avoid ambiguity that can arise after rebase starts running.  Newly
created objects during the rebase may share the same prefix with
existing commits listed in the insn sheet.  These object names are
shortened just before invoking the sequence editor to present the
insn sheet to the end user, and then expanded back to full object
names when the editor returns.

But the code still used the shortened names when preparing the insn
sheet for the very first time, resulting "7 hexdigits or more"
output to the user.  Change the code to use full 40-hex commit
object names from the very beginning to make things more uniform.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh
index b64dd28..6f520d8 100644 (file)
--- a/git-rebase--interactive.sh
+++ b/git-rebase--interactive.sh
@@ -961,14 +961,13 @@ else
        revisions=$onto...$orig_head
        shortrevisions=$shorthead
 fi
-git rev-list $merges_option --pretty=oneline --abbrev-commit \
-       --abbrev=7 --reverse --left-right --topo-order \
+git rev-list $merges_option --pretty=oneline --reverse --left-right --topo-order \
        $revisions ${restrict_revision+^$restrict_revision} | \
        sed -n "s/^>//p" |
-while read -r shortsha1 rest
+while read -r sha1 rest
 do
 
-       if test -z "$keep_empty" && is_empty_commit $shortsha1 && ! is_merge_commit $shortsha1
+       if test -z "$keep_empty" && is_empty_commit $sha1 && ! is_merge_commit $sha1
        then
                comment_out="$comment_char "
        else
@@ -977,9 +976,8 @@ do
 
        if test t != "$preserve_merges"
        then
-               printf '%s\n' "${comment_out}pick $shortsha1 $rest" >>"$todo"
+               printf '%s\n' "${comment_out}pick $sha1 $rest" >>"$todo"
        else
-               sha1=$(git rev-parse $shortsha1)
                if test -z "$rebase_root"
                then
                        preserve=t
@@ -996,7 +994,7 @@ do
                if test f = "$preserve"
                then
                        touch "$rewritten"/$sha1
-                       printf '%s\n' "${comment_out}pick $shortsha1 $rest" >>"$todo"
+                       printf '%s\n' "${comment_out}pick $sha1 $rest" >>"$todo"
                fi
        fi
 done
@@ -1020,8 +1018,8 @@ then
                        # just the history of its first-parent for others that will
                        # be rebasing on top of it
                        git rev-list --parents -1 $rev | cut -d' ' -s -f2 > "$dropped"/$rev
-                       short=$(git rev-list -1 --abbrev-commit --abbrev=7 $rev)
-                       sane_grep -v "^[a-z][a-z]* $short" <"$todo" > "${todo}2" ; mv "${todo}2" "$todo"
+                       sha1=$(git rev-list -1 $rev)
+                       sane_grep -v "^[a-z][a-z]* $sha1" <"$todo" > "${todo}2" ; mv "${todo}2" "$todo"
                        rm "$rewritten"/$rev
                fi
        done
@@ -1052,6 +1050,7 @@ has_action "$todo" ||
        return 2
 
 cp "$todo" "$todo".backup
+collapse_todo_ids
 git_sequence_editor "$todo" ||
        die_abort "Could not execute editor"
 

diff --git a/t/t3404-rebase-interactive.sh b/t/t3404-rebase-interactive.sh
index 8197ed2..a31f7e0 100755 (executable)
--- a/t/t3404-rebase-interactive.sh
+++ b/t/t3404-rebase-interactive.sh
@@ -1039,4 +1039,11 @@ test_expect_success 'short SHA-1 collide' '
        )
 '
 
+test_expect_success 'respect core.abbrev' '
+       git config core.abbrev 12 &&
+       set_cat_todo_editor &&
+       test_must_fail git rebase -i HEAD~4 >todo-list &&
+       test 4 = $(grep -c "pick [0-9a-f]\{12,\}" todo-list)
+'
+
 test_done