jesseduffield.lazygit/pkg/gocui
Stefan Haller 9c8a02f901 Remove the '\n' sentinel cell
The sentinel was appended to every \n-terminated line solely so that
draw()'s prevFgColor tracking would reset to default for the trailing
area; without it, an AttrReverse-styled last cell would carry its
rendered bg past the end of the line.

The same prevFgColor mechanism propagated AttrReverse past content on
*unterminated* lines too — which doesn't match real terminal behavior
(try `print '\x1b[7m\x1b[31mfoo'` in a shell: the reverse stops at
the last character) and isn't relied on by anything in lazygit, since
all our writers terminate lines with \n.

Drop the sentinel cell, drop prevFgColor, and just have draw() paint
trailing cells with the view's default fg/bg. The
TestUnterminatedReverseLineExtendsToEdge regression test inverts to
document the new (terminal-matching) behavior, renamed accordingly.
TestWriteString expectations also drop the trailing "" that came
from the sentinel.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-06-18 17:22:31 +02:00
..
attribute.go Bump tcell dependency to v3 2026-04-30 22:14:26 +02:00
AUTHORS Copy gocui files into lazygit repo under pkg/gocui 2026-04-30 14:29:08 +02:00
CHANGES_tcell.md Copy gocui files into lazygit repo under pkg/gocui 2026-04-30 14:29:08 +02:00
CODE_OF_CONDUCT.md Copy gocui files into lazygit repo under pkg/gocui 2026-04-30 14:29:08 +02:00
CONTRIBUTING.md Copy gocui files into lazygit repo under pkg/gocui 2026-04-30 14:29:08 +02:00
doc.go Remove dead Modifier field from keybindings 2026-05-06 09:51:23 +02:00
edit.go Convert keybinding fields to Keybinding 2026-05-25 15:32:47 +02:00
escape.go Copy gocui files into lazygit repo under pkg/gocui 2026-04-30 14:29:08 +02:00
escape_test.go Fix linter warnings 2026-04-30 14:29:08 +02:00
flush_test.go When drawing tainted views in ForceFlushViewsContentOnly, also draw views that overlap them 2026-05-09 13:58:33 +02:00
gui.go Wrap v.lines cells in a line struct 2026-06-18 17:22:31 +02:00
gui_others.go Copy gocui files into lazygit repo under pkg/gocui 2026-04-30 14:29:08 +02:00
gui_windows.go Fix linter warnings 2026-04-30 14:29:08 +02:00
key.go Move modifiers into Key 2026-04-30 22:22:53 +02:00
keybinding.go Remove dead Modifier field from keybindings 2026-05-06 09:51:23 +02:00
LICENSE Copy gocui files into lazygit repo under pkg/gocui 2026-04-30 14:29:08 +02:00
README.md Copy gocui files into lazygit repo under pkg/gocui 2026-04-30 14:29:08 +02:00
scrollbar.go Copy gocui files into lazygit repo under pkg/gocui 2026-04-30 14:29:08 +02:00
scrollbar_test.go Copy gocui files into lazygit repo under pkg/gocui 2026-04-30 14:29:08 +02:00
task.go Copy gocui files into lazygit repo under pkg/gocui 2026-04-30 14:29:08 +02:00
task_manager.go Copy gocui files into lazygit repo under pkg/gocui 2026-04-30 14:29:08 +02:00
tcell_driver.go Move modifiers into Key 2026-04-30 22:22:53 +02:00
text_area.go Add a forwardDeleteWord keybinding 2026-04-30 22:31:44 +02:00
text_area_test.go Fix linter warnings 2026-04-30 14:29:08 +02:00
view.go Remove the '\n' sentinel cell 2026-06-18 17:22:31 +02:00
view_test.go Remove the '\n' sentinel cell 2026-06-18 17:22:31 +02:00

GOCUI - Go Console User Interface

CircleCI CodeCov Go Report Card GolangCI GoDoc GitHub tag (latest SemVer)

Minimalist Go package aimed at creating Console User Interfaces. A community fork based on the amazing work of jroimartin

Features

  • Minimalist API.
  • Views (the "windows" in the GUI) implement the interface io.ReadWriter.
  • Support for overlapping views.
  • The GUI can be modified at runtime (concurrent-safe).
  • Global and view-level keybindings.
  • Mouse support.
  • Colored text.
  • Customizable editing mode.
  • Easy to build reusable widgets, complex layouts...

About fork

This fork has many improvements over the original work from jroimartin.

  • Written ontop of TCell
  • Better wide character support
  • Support for 1 Line height views
  • Better support for running in docker container
  • Customize frame colors
  • Improved code comments and quality
  • Many small improvements
  • Change Visibility of views

For information about this org see: awesome-gocui/about.

Installation

Execute:

$ go get github.com/awesome-gocui/gocui

Documentation

Execute:

$ go doc github.com/awesome-gocui/gocui

Or visit godoc.org to read it online.

Example

See the _example folder for more examples

package main

import (
	"fmt"
	"log"

	"github.com/awesome-gocui/gocui"
)

func main() {
	g, err := gocui.NewGui(gocui.OutputNormal, true)
	if err != nil {
		log.Panicln(err)
	}
	defer g.Close()

	g.SetManagerFunc(layout)

	if err := g.SetKeybinding("", gocui.KeyCtrlC, gocui.ModNone, quit); err != nil {
		log.Panicln(err)
	}

	if err := g.MainLoop(); err != nil && !gocui.IsQuit(err) {
		log.Panicln(err)
	}
}

func layout(g *gocui.Gui) error {
	maxX, maxY := g.Size()
	if v, err := g.SetView("hello", maxX/2-7, maxY/2, maxX/2+7, maxY/2+2, 0); err != nil {
		if !gocui.IsUnknownView(err) {
			return err
		}

		if _, err := g.SetCurrentView("hello"); err != nil {
			return err
		}

		fmt.Fprintln(v, "Hello world!")
	}

	return nil
}

func quit(g *gocui.Gui, v *gocui.View) error {
	return gocui.ErrQuit
}

Screenshots

r2cui

_examples/demo.go

_examples/dynamic.go

Projects using gocui

  • komanda-cli: IRC Client For Developers.
  • vuls: Agentless vulnerability scanner for Linux/FreeBSD.
  • wuzz: Interactive cli tool for HTTP inspection.
  • httplab: Interactive web server.
  • domainr: Tool that checks the availability of domains based on keywords.
  • gotime: Time tracker for projects and tasks.
  • claws: Interactive command line client for testing websockets.
  • terminews: Terminal based RSS reader.
  • diagram: Tool to convert ascii arts into hand drawn diagrams.
  • pody: CLI app to manage Pods in a Kubernetes cluster.
  • kubexp: Kubernetes client.
  • kcli: Tool for inspecting kafka topics/partitions/messages.
  • fac: git merge conflict resolver
  • jsonui: Interactive JSON explorer for your terminal.
  • cointop: Interactive terminal based UI application for tracking cryptocurrencies.
  • lazygit: simple terminal UI for git commands.
  • lazydocker: The lazier way to manage everything docker.

Note: if your project is not listed here, let us know! :)