git/list[1] front-page[2] threads[3] people[4] search[5] about
 

[PATCH 5/5] git-difftool--helper.sh: exit upon initialize_merge_tool errors

From
Philippe Blain via GitGitGadget <gitgitgadget@gmail.com>
Date
Nov 13, 2024, 00:52 UTC
Message-ID
<be0b86f08901046878f1b1406f811166d56c7c6d.1731459128.git.gitgitgadget@gmail.com>
In-Reply-To
<pull.1827.git.1731459128.gitgitgadget@gmail.com>
From: Philippe Blain <levraiphilippeblain@gmail.com>

Since the introduction of 'initialize_merge_tool' in de8dafbada (mergetool: break setup_tool out into separate initialization function, 2021-02-09), any errors from this function are ignored in git-difftool--helper.sh::launch_merge_tool, which is not the case for its call in git-mergetool.sh::merge_file.

Despite the in-code comment, initialize_merge_tool (via its call to setup_tool) does different checks than run_merge_tool, so it makes sense to abort early if it encounters errors. Add exit calls if initialize_merge_tool fails.

Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com>
---
 git-difftool--helper.sh | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/git-difftool--helper.sh b/git-difftool--helper.sh
index dd0c9a5b7f2..d32e47cc09e 100755
--- a/git-difftool--helper.sh
+++ b/git-difftool--helper.sh
@@ -61,9 +61,7 @@ launch_merge_tool () {
 		export BASE
 		eval $GIT_DIFFTOOL_EXTCMD '"$LOCAL"' '"$REMOTE"'
 	else
-		initialize_merge_tool "$merge_tool"
-		# ignore the error from the above --- run_merge_tool
-		# will diagnose unusable tool by itself
+		initialize_merge_tool "$merge_tool" || exit 1
 		run_merge_tool "$merge_tool"
 	fi
 }
@@ -87,9 +85,7 @@ if test -n "$GIT_DIFFTOOL_DIRDIFF"
 then
 	LOCAL="$1"
 	REMOTE="$2"
-	initialize_merge_tool "$merge_tool"
-	# ignore the error from the above --- run_merge_tool
-	# will diagnose unusable tool by itself
+	initialize_merge_tool "$merge_tool" || exit 1
 	run_merge_tool "$merge_tool" false
 
 	status=$?
-- 
gitgitgadget
Previous: Philippe BlainNext: Philippe Blain via GitGitGadget
Message 13 of 20 in “git-mergetool: improve error code paths and messages”
  1. 0/5 git-mergetool: improve error code paths and messagesPhilippe Blain via GitGitGadget, Nov 13, 2024
  2. 1/5 completion: complete '--tool-help' in 'git mergetool'Philippe Blain via GitGitGadget, Nov 13, 2024
  3. 2/5 git-mergetool--lib.sh: use TOOL_MODE when erroring about unknown toolPhilippe Blain via GitGitGadget, Nov 13, 2024
  4. Junio C HamanoNov 13, 2024
  5. Philippe BlainNov 22, 2024
  6. Philippe BlainNov 22, 2024
  7. 3/5 git-mergetool--lib.sh: add error message in 'setup_user_tool'Philippe Blain via GitGitGadget, Nov 13, 2024
  8. Junio C HamanoNov 13, 2024
  9. Philippe BlainNov 22, 2024
  10. 4/5 git-mergetool--lib.sh: add error message for unknown tool variantPhilippe Blain via GitGitGadget, Nov 13, 2024
  11. Junio C HamanoNov 13, 2024
  12. Philippe BlainNov 22, 2024
  13. 5/5 git-difftool--helper.sh: exit upon initialize_merge_tool errorsPhilippe Blain via GitGitGadget, Nov 13, 2024
  14. 0/5 git-mergetool: improve error code paths and messagesPhilippe Blain via GitGitGadget, Nov 22, 2024
  15. 1/5 completion: complete '--tool-help' in 'git mergetool'Philippe Blain via GitGitGadget, Nov 22, 2024
  16. 2/5 git-mergetool--lib.sh: use TOOL_MODE when erroring about unknown toolPhilippe Blain via GitGitGadget, Nov 22, 2024
  17. 3/5 git-mergetool--lib.sh: add error message if 'setup_user_tool' failsPhilippe Blain via GitGitGadget, Nov 22, 2024
  18. 4/5 git-mergetool--lib.sh: add error message for unknown tool variantPhilippe Blain via GitGitGadget, Nov 22, 2024
  19. 5/5 git-difftool--helper.sh: exit upon initialize_merge_tool errorsPhilippe Blain via GitGitGadget, Nov 22, 2024
  20. Junio C HamanoNov 26, 2024

Read the whole thread, see it on lore, or plain text.

$ cat FOOTERMessages come from the public archive at lore.kernel.org/git, fetched every hour. The front page is chosen and written each morning by an AI editor and can be wrong; the threads themselves are the record. About and API. For agents: an MCP server at https://gitlist.dev/mcp, and any thread, story or person page as Markdown by adding .md to its URL (or sending Accept: text/markdown). Details in /llms.txt.