Thread (24 messages) flat view 24 messages, 5 authors, 2016-06-15

Re: [PATCH 3/3] rebase: new convenient option to edit a single commit

From: Eric Sunshine <hidden>
Date: 2016-06-15 23:00:09

On Sat, Mar 1, 2014 at 9:53 PM, Nguyễn Thái Ngọc Duy [off-list ref] wrote:
"git rebase -e XYZ" is basically the same as

EDITOR="sed -i '1s/pick XYZ/edit XYZ/' $@" \
git rebase -i XYZ^

In English, it prepares the todo list for you to edit only commit XYZ
to save your time. The time saving is only significant when you edit a
lot of commits separately.
Should this accept multiple -e arguments? Based upon the above
justification, it sounds like it should, and I think that would be the
intuitive expectation (at least for me).

The current implementation, however, is broken with multiple -e arguments. With:

    git rebase -i -e older -e newer

'newer' is ignored entirely. However, with:

    git rebase -i -e newer -e older

it errors out when rewriting the todo list:

    "expected to find 'edit older' line but did not"

An implementation supporting multiple -e arguments would need to
ensure that the todo list extends to the "oldest" rev specified by any
-e argument.
quoted hunk ↗ jump to hunk
Signed-off-by: Nguyễn Thái Ngọc Duy <redacted>
---
 Documentation/git-rebase.txt |  4 ++++
 git-rebase--interactive.sh   | 17 ++++++++++++++---
 git-rebase.sh                | 10 ++++++++++
 3 files changed, 28 insertions(+), 3 deletions(-)
diff --git a/Documentation/git-rebase.txt b/Documentation/git-rebase.txt
index 52c3561..b8c263d 100644
--- a/Documentation/git-rebase.txt
+++ b/Documentation/git-rebase.txt
@@ -359,6 +359,10 @@ unless the `--fork-point` option is specified.
        user edit that list before rebasing.  This mode can also be used to
        split commits (see SPLITTING COMMITS below).

+-e::
+--edit-one::
+       Prepare the todo list to edit only the commit at <upstream>
+
 -p::
 --preserve-merges::
        Instead of ignoring merges, try to recreate them.
diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh
index a1adae8..4762d57 100644
--- a/git-rebase--interactive.sh
+++ b/git-rebase--interactive.sh
@@ -1040,9 +1040,20 @@ fi
 has_action "$todo" ||
        die_abort "Nothing to do"

-cp "$todo" "$todo".backup
-git_sequence_editor "$todo" ||
-       die_abort "Could not execute editor"
+if test -n "$edit_one"
+then
+       edit_one="`git rev-parse --short $edit_one`"
+       sed "1s/pick $edit_one /edit $edit_one /" "$todo" > "$todo.new" ||
+               die_abort "failed to update todo list"
+       grep "^edit $edit_one " "$todo.new" >/dev/null ||
+               die_abort "expected to find 'edit $edit_one' line but did not"
+       mv "$todo.new" "$todo" ||
+               die_abort "failed to update todo list"
+else
+       cp "$todo" "$todo".backup
+       git_sequence_editor "$todo" ||
+               die_abort "Could not execute editor"
+fi

 has_action "$todo" ||
        die_abort "Nothing to do"
diff --git a/git-rebase.sh b/git-rebase.sh
index 33face1..b8b6aa9 100755
--- a/git-rebase.sh
+++ b/git-rebase.sh
@@ -32,6 +32,7 @@ verify             allow pre-rebase hook to run
 rerere-autoupdate  allow rerere to update index with resolved conflicts
 root!              rebase all reachable commits up to the root(s)
 autosquash         move commits that begin with squash!/fixup! under -i
+e,edit-one!        generate todo list to edit this commit
 committer-date-is-author-date! passed to 'git am'
 ignore-date!       passed to 'git am'
 whitespace=!       passed to 'git apply'
@@ -339,6 +340,10 @@ do
        -NUM=*)
                NUM="${1#-NUM=}"
                ;;
+       --edit-one)
+               interactive_rebase=explicit
+               edit_one=t
+               ;;
        --)
                shift
                break
@@ -463,6 +468,11 @@ then
                ;;
        *)      upstream_name="$1"
                shift
+               if test -n "$edit_one"
+               then
+                       edit_one="$upstream_name"
+                       upstream_name="$upstream_name^"
+               fi
                ;;
        esac
        upstream=$(peel_committish "${upstream_name}") ||
--
1.9.0.40.gaa8c3ea

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