[PATCH v5] commit: restore --edit when combined with --fixup

["Joel Klinghed via GitGitGadget" <gitgitgadget@gmail.com>]

From: Joel Klinghed <the_jk@spawned.biz>

Recent changes to --fixup, adding amend suboption, caused the
--edit flag to be ignored as use_editor was always set to zero.

Restore edit_flag having higher priority than fixup_message when
deciding the value of use_editor by moving the edit flag condition
later in the method.

Signed-off-by: Joel Klinghed <the_jk@spawned.biz>
---
    commit: restore --edit when combined with --fixup
    
    Recent changes to --fixup, adding amend suboption, caused the --edit
    flag to be ignored as use_editor was always set to zero.
    
    Restore edit_flag having higher priority than fixup_message when
    deciding the value of use_editor by only changing the default if
    edit_flag is not set.
    
    Changes since v1: Added test verifying that --fixup --edit brings up
    editor.
    
    Changes since v2: Clarify if condition and use write_script helper in
    test.
    
    Changes since v3: Simplify test.
    
    Changes since v4: Using cleaner fix by Phillip Wood instead and added an
    explicit verification to a test for --fixup without --edit.
    
    Signed-off-by: Joel Klinghed the_jk@spawned.biz

Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-1014%2Fthejk%2Ffixup_edit-v5
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-1014/thejk/fixup_edit-v5
Pull-Request: https://github.com/gitgitgadget/git/pull/1014

Range-diff vs v4:

 1:  0c0cb647e03 ! 1:  1c608daf0cd commit: restore --edit when combined with --fixup
     @@ Commit message
          --edit flag to be ignored as use_editor was always set to zero.
      
          Restore edit_flag having higher priority than fixup_message when
     -    deciding the value of use_editor by only changing the default
     -    if edit_flag is not set.
     +    deciding the value of use_editor by moving the edit flag condition
     +    later in the method.
      
          Signed-off-by: Joel Klinghed <the_jk@spawned.biz>
      
       ## builtin/commit.c ##
      @@ builtin/commit.c: static int parse_and_validate_options(int argc, const char *argv[],
     - 		} else {
     - 			fixup_commit = fixup_message;
     - 			fixup_prefix = "fixup";
     --			use_editor = 0;
     -+			if (edit_flag < 0)
     -+				use_editor = 0;
     + 
     + 	if (logfile || have_option_m || use_message)
     + 		use_editor = 0;
     +-	if (0 <= edit_flag)
     +-		use_editor = edit_flag;
     + 
     + 	/* Sanity check options */
     + 	if (amend && !current_head)
     +@@ builtin/commit.c: static int parse_and_validate_options(int argc, const char *argv[],
       		}
       	}
       
     ++	if (0 <= edit_flag)
     ++		use_editor = edit_flag;
     ++
     + 	cleanup_mode = get_cleanup_mode(cleanup_arg, use_editor);
     + 
     + 	handle_untracked_files_arg(s);
      
       ## t/t7500-commit-template-squash-signoff.sh ##
     +@@ t/t7500-commit-template-squash-signoff.sh: EOF
     + 
     + test_expect_success 'commit --fixup provides correct one-line commit message' '
     + 	commit_for_rebase_autosquash_setup &&
     +-	git commit --fixup HEAD~1 &&
     ++	EDITOR="echo ignored >>" git commit --fixup HEAD~1 &&
     + 	commit_msg_is "fixup! target message subject line"
     + '
     + 
      @@ t/t7500-commit-template-squash-signoff.sh: test_expect_success 'commit --fixup -m"something" -m"extra"' '
       
       extra"


 builtin/commit.c                          | 5 +++--
 t/t7500-commit-template-squash-signoff.sh | 9 ++++++++-
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/builtin/commit.c b/builtin/commit.c
index 190d215d43b..854903ad113 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -1246,8 +1246,6 @@ static int parse_and_validate_options(int argc, const char *argv[],
 
 	if (logfile || have_option_m || use_message)
 		use_editor = 0;
-	if (0 <= edit_flag)
-		use_editor = edit_flag;
 
 	/* Sanity check options */
 	if (amend && !current_head)
@@ -1337,6 +1335,9 @@ static int parse_and_validate_options(int argc, const char *argv[],
 		}
 	}
 
+	if (0 <= edit_flag)
+		use_editor = edit_flag;
+
 	cleanup_mode = get_cleanup_mode(cleanup_arg, use_editor);
 
 	handle_untracked_files_arg(s);
diff --git a/t/t7500-commit-template-squash-signoff.sh b/t/t7500-commit-template-squash-signoff.sh
index 7d02f79c0de..8515736003a 100755
--- a/t/t7500-commit-template-squash-signoff.sh
+++ b/t/t7500-commit-template-squash-signoff.sh
@@ -270,7 +270,7 @@ EOF
 
 test_expect_success 'commit --fixup provides correct one-line commit message' '
 	commit_for_rebase_autosquash_setup &&
-	git commit --fixup HEAD~1 &&
+	EDITOR="echo ignored >>" git commit --fixup HEAD~1 &&
 	commit_msg_is "fixup! target message subject line"
 '
 
@@ -281,6 +281,13 @@ test_expect_success 'commit --fixup -m"something" -m"extra"' '
 
 extra"
 '
+test_expect_success 'commit --fixup --edit' '
+	commit_for_rebase_autosquash_setup &&
+	EDITOR="printf \"something\nextra\" >>" git commit --fixup HEAD~1 --edit &&
+	commit_msg_is "fixup! target message subject linesomething
+extra"
+'
+
 get_commit_msg () {
 	rev="$1" &&
 	git log -1 --pretty=format:"%B" "$rev"

base-commit: ebf3c04b262aa27fbb97f8a0156c2347fecafafb
-- 
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