jesseduffield.lazygit/pkg/gui
Stefan Haller f000ce9f1c Never hand NewCmdTask a nil reader when a command fails to start
NewCmdTask feeds the reader returned by its start func into a
bufio.Scanner, and Scanner.Scan panics with a nil pointer dereference
when that reader is nil. Two start funcs could produce one:

- newPtyTask's fallback for a failed StartPty returned a literal nil
  reader, alongside an ExecCmd that was never started, so the intended
  "fall back to a plain cmd task" never worked. This crashed lazygit on
  Windows when using a custom pager with the main view zero-sized, e.g.
  after pressing + twice to enter full-screen mode with a side panel
  focused: ConPTY rejects zero dimensions, making StartPty fail.

- startCmdWithPipe returned nil when the pipe couldn't be created,
  which the Unix pty fallback path can trigger, since a failed pty
  start can leave the tty assigned to the command's stdout.

Make startCmdWithPipe never return a nil reader: when the pipe can't be
created, don't start the command at all and return an empty reader so
the task shuts down cleanly with the error in the log. Then route
newPtyTask's fallback through it, so a StartPty failure degrades to
running the command without a pty: the pager is lost, but the command's
output still renders.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-23 17:31:26 +02:00
..
context Capture suggestions inputs on the UI thread 2026-07-17 12:35:54 +02:00
controllers Block input while the refresh after a stash operation is in flight 2026-07-22 08:31:11 +02:00
filetree Clamp the commit-file tree selection when the tree is rebuilt 2026-07-07 18:09:33 +02:00
mergeconflicts Pick both hunks, not the common ancestor, in diff3 conflicts 2026-07-01 09:57:26 +02:00
modes Make Commit.Hash a getter for an unexported hash field 2025-04-29 14:57:15 +02:00
patch_exploring Copy gocui files into lazygit repo under pkg/gocui 2026-04-30 14:29:08 +02:00
popup Retire WithWaitingStatusSync 2026-07-17 12:32:32 +02:00
presentation Show renamed files in the custom patch builder 2026-07-04 13:05:09 +02:00
services/custom_commands Remove the RefreshMode field 2026-07-17 12:32:32 +02:00
status Render the app status in a single background render loop 2026-07-17 15:55:01 +02:00
style Modernize all codes 2025-11-15 10:46:23 +01:00
types Add RefreshBlockingInput to buffer keypresses until a refresh has landed 2026-07-22 08:31:11 +02:00
background.go Read the gui's per-repo pointers on the UI thread in background routines 2026-07-20 17:07:39 +02:00
command_log_panel.go Write the command log on the UI thread 2026-07-09 08:41:10 +02:00
context.go Bump gocui (and tcell) 2025-12-23 16:49:16 +01:00
context_config.go Remove some unused code 2025-07-08 15:14:45 +02:00
controllers.go Redesign the 'w' worktree-creation flow 2026-07-03 18:53:05 +02:00
dummies.go Move NewDummyCommon to pkg/common 2025-05-06 09:43:26 +02:00
editors.go Capture suggestions inputs on the UI thread 2026-07-17 12:35:54 +02:00
extras_panel.go Rename Key to Keys in Binding, KeybindingsOpts, and MenuItem 2026-05-25 15:18:18 +02:00
global_handlers.go Read lines based on scroll position instead of a fixed per-notch delta 2026-07-09 09:32:35 +02:00
gui.go Block input and batch UI updates when switching repos 2026-07-22 08:31:11 +02:00
gui_common.go Add RefreshBlockingInput to buffer keypresses until a refresh has landed 2026-07-22 08:31:11 +02:00
gui_driver.go Add a way for integration tests to press keys in rapid succession 2026-07-21 22:23:58 +02:00
information_panel.go Rename ModeStatus.Description to InfoLabel 2025-08-14 17:59:38 +02:00
keybindings.go Fold remaining alt bindings into their main fields 2026-05-25 15:32:47 +02:00
layout.go Don't show a transient view whose window is not part of the layout 2026-07-17 12:07:24 +02:00
main_panels.go Run moveMainContextPairToTop before queueing main-view tasks 2026-07-02 17:32:01 +02:00
menu_panel.go Fold remaining alt bindings into their main fields 2026-05-25 15:32:47 +02:00
options_map.go Cleanup: filter out empty keybindings earlier 2026-05-28 19:26:43 +02:00
pty.go Never hand NewCmdTask a nil reader when a command fails to start 2026-07-23 17:31:26 +02:00
recent_repos_panel.go Remove unused field gui.IsNewRepo 2024-12-01 10:44:26 +01:00
side_panels.go Assign the transient contexts' initial windows from the side panel config 2026-07-17 12:07:24 +02:00
side_panels_test.go Assign the transient contexts' initial windows from the side panel config 2026-07-17 12:07:24 +02:00
tasks_adapter.go Never hand NewCmdTask a nil reader when a command fails to start 2026-07-23 17:31:26 +02:00
tasks_adapter_test.go Never hand NewCmdTask a nil reader when a command fails to start 2026-07-23 17:31:26 +02:00
test_mode.go Dump goroutine stacks when the test watchdog fires 2026-07-20 14:26:25 +02:00
test_timeout_norace.go Scale the integration test watchdog up under the race detector 2026-07-20 14:26:25 +02:00
test_timeout_race.go Scale the integration test watchdog up under the race detector 2026-07-20 14:26:25 +02:00
view_helpers.go Render content-only when a task reads more lines into a view 2026-07-09 09:32:35 +02:00
views.go Clear tab strips on views that are no longer tabs 2026-06-23 14:15:18 +02:00