jesseduffield.lazygit/pkg
Stefan Haller d2a1a4f2a2 Start all commands of a pipeline before waiting for any of them
PipeCommands ran every command in its own goroutine, each doing
Start/read-stderr/Wait, with nothing ordering one goroutine's Start
against another's Wait. That ordering matters: StdoutPipe registers the
parent's read end in cmd.parentIOPipes, and Cmd.Wait closes those
descriptors when it returns. The next command's Stdin is that very
*os.File, and exec passes a user-supplied *os.File through untouched, so
Start hands the child whatever the fd happens to be at that moment. If
the producer finished and got reaped before the consumer's goroutine
reached Start, that fd was already closed, File.Fd() returned -1, and
the child was started with fd 0 closed -- reading nothing at all.

The only caller is the pre-2.35 fallback in SaveStagedChanges, which
pipes `git stash show -p` into `git apply -R`. Losing that race left
git apply with an empty patch, so it failed with "unrecognized input",
the following `git stash drop` never ran, and the user was left with a
stray stash entry. This turned up as a flaky stash/stash_staged on the
git 2.32.0 CI job; the newer-git jobs take the `git stash push --staged`
path and never reach this code.

Starting every command up front removes the race, and collecting stderr
into buffers lets exec's own copying goroutines do the work. That also
fixes two lesser problems in the same function: finalErrors was appended
to from several goroutines without synchronization, and a failed Start
was only logged, so a pipeline that never ran reported success.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-06 14:34:47 +02:00
..
app Move dragged commits in one rebase 2026-07-31 08:37:28 +02:00
cheatsheet Render every key for a binding in the cheatsheet 2026-05-25 15:18:18 +02:00
commands Start all commands of a pipeline before waiting for any of them 2026-08-06 14:34:47 +02:00
common Move NewDummyCommon to pkg/common 2025-05-06 09:43:26 +02:00
config Move Github PR cache out of state.yml into a separate file 2026-08-02 19:09:22 +02:00
constants Adapt links 2026-07-31 08:42:51 +02:00
env Support bare worktrees where worktree does not have its own .git file 2023-08-07 22:40:53 +10:00
fakes Modernize all codes 2025-11-15 10:46:23 +01:00
gocui Exclude more commit trailers from auto-wrapping 2026-08-02 19:22:34 +02:00
gui Scroll the selection into view after a filtering mode change 2026-08-05 17:29:20 +02:00
i18n Don't show an unfiltered list as if it were filtered 2026-08-05 17:29:20 +02:00
integration Don't let a broken fixture take down the whole test binary 2026-08-05 17:02:06 +02:00
jsonschema Fold legacy quit-alt1 into the multi-key quit binding 2026-05-25 15:32:47 +02:00
logs Fix Windows linter errors 2026-06-16 16:21:13 +02:00
snake Enable intrange linter, and fix warnings 2025-06-30 18:30:11 +02:00
tasks Give task commands a Terminate method instead of exposing their process 2026-08-04 07:03:27 +02:00
theme Copy gocui files into lazygit repo under pkg/gocui 2026-04-30 14:29:08 +02:00
updates Change direct access to Common.UserConfig to a getter 2024-08-18 10:24:52 +02:00
utils Rework the custom pager config (rename to diff renderer) 2026-07-31 08:42:51 +02:00