Terminal inspection · ANSI validation · inline interfaces

loom inspect terminal output and build inline terminal tools.

The loom CLI reports terminal capabilities, measures and evaluates ANSI assets, checks box alignment, views and formats terminal artwork, and demonstrates interactive widgets. The Go library supplies reusable widgets and layout primitives to applications that need to stay in the current terminal.

go install ubunatic.com/loom/cmd/loom@latest

View source Product home

Project snapshot · measured 2026-10-26

Key facts

Commits 1,968Last commit 2026-10-25 Source receipt ↗ Commits · 7 days 327 Source receipt ↗ Tickets closed 341 / 384 Source receipt ↗ Studies 50 Source receipt ↗

12-week commit activity

2026-10-26

Aug 3

Aug 10

Aug 17

Aug 24

Aug 31

Sep 7

117

Sep 14

314

Sep 21

352

Sep 28

263

Oct 5

134

Oct 12

321

Oct 19

View 12-week data table

Week starting	Commits
2026-08-03	2
2026-08-10	0
2026-08-17	0
2026-08-24	0
2026-08-31	0
2026-09-07	80
2026-09-14	117
2026-09-21	314
2026-09-28	352
2026-10-05	263
2026-10-12	134
2026-10-19	321

Key Features

Inline terminal interface preserving shell history and terminal scrollback.
RichTextEdit styled text editor with bar/block cursor shape routing and box drawing.
1,243 test functions with headless PTY canaries and OSC 52 / CSI-u terminal protocol checks.

Verified Engineering Milestones

2026-10-01 module migration to ubunatic.com/loom
2026-10-03 v0.3.0 release and RichTextEdit milestones
2026-10-04 editor navigation and box tools

Stack

Go 1.25, YAML, Cobra, ANSI/OSC/CSI-u terminal protocols, Linux procfs sampling, PTY checks

Terminal inspection

Check the terminal and its output

info

Report terminal dimensions, environment capabilities, colour depth, mouse support, and Unicode width.

measure

Measure visible row widths in terminal cells, accounting for ANSI control sequences and wide characters.

eval

Evaluate terminal dimensions and row geometry, with optional diagnostic annotations.

ANSI asset validation

Validate and normalize terminal artwork

check-box

Validate Unicode box-border alignment across one or more files.

format

Normalize ANSI row widths, trim trailing whitespace, or align complete box edges; write changes only when requested.

loom measure loom-logo.ansi
loom eval loom-logo.ansi
loom check-box docs/data/ansiedit-design-001.ansi
loom format --trim-trailing artwork.ansi

Inspect interactively

View terminal artwork in place

The view command interactively displays an ANSI file while preserving the surrounding terminal context.

Live widget demos

Try the interactive widgets

frame

Wrap file contents in a Unicode border with configurable style, title, padding, and colour.

widgets

Browse the widget catalog, inspect usage, or run live demos for individual widgets and the gallery.

loom frame README.md --title "loom"
loom widgets --list
loom widgets --show Chart

Go library

Reusable inline terminal UI

Applications can use loom directly for selection, editing, layout, and terminal rendering.

go get ubunatic.com/loom

Project details

Stack

Go 1.25, YAML, Cobra, ANSI/OSC/CSI-u terminal protocols, Linux procfs sampling, PTY checks

Milestones

2026-10-01 module migration to ubunatic.com/loom · 2026-10-03 v0.3.0 release and RichTextEdit milestones · 2026-10-04 editor navigation and box tools

Source

https://codeberg.org/ubunatic/loom ↗

Architecture

Layer composition

Terminal: ANSI, OSC, CSI, terminal, PTY
Desktop: Linux
Inference / AI: —
Containers / VM: —
Web: —

Engineering story

loom: the story behind the project

Loom is a Go library for building terminal interfaces from reusable widgets. It began as shared UI code extracted from the uzu project; its purpose now is to let independent command line tools reuse the same input, layout, rendering and int…

Read the engineering story

Measurement source · 2026-10-26

Verification receipts

Commits: 1,968 · Last commit 2026-10-25
git -C <repo> rev-list --count HEAD; git -C <repo> rev-list --count --since=<ISO-week-Monday> --until=<ISO-week-Sunday> HEAD; git -C <repo> rev-list --count --since=<measured-date-6-days>T00:00:00 --until=<measured-date>T23:59:59 HEAD; git -C <repo> log -1 --format=%cs HEAD; ls <repo>/issues | grep '^[0-9].*\.md$'; grep -l -E '^\*\*Status\*\*: *(Closed|Done|Resolved|Fixed|Complete)' <repo>/issues/*.md | wc -l; ls <repo>/docs/studies/*.md
repositories behind spec project ids in ~/projects; private-repo filter is a safety net and matches no spec project today; missing repos reported separately; seven calendar days ending on measured date in the measuring host's local timezone; commit counts include all authors and merge commits reachable from HEAD · measured 2026-10-26
Commits · 7 days: 327
git -C <repo> rev-list --count HEAD; git -C <repo> rev-list --count --since=<ISO-week-Monday> --until=<ISO-week-Sunday> HEAD; git -C <repo> rev-list --count --since=<measured-date-6-days>T00:00:00 --until=<measured-date>T23:59:59 HEAD; git -C <repo> log -1 --format=%cs HEAD; ls <repo>/issues | grep '^[0-9].*\.md$'; grep -l -E '^\*\*Status\*\*: *(Closed|Done|Resolved|Fixed|Complete)' <repo>/issues/*.md | wc -l; ls <repo>/docs/studies/*.md
repositories behind spec project ids in ~/projects; private-repo filter is a safety net and matches no spec project today; missing repos reported separately; seven calendar days ending on measured date in the measuring host's local timezone; commit counts include all authors and merge commits reachable from HEAD · measured 2026-10-26
Tickets closed: 341 / 384
git -C <repo> rev-list --count HEAD; git -C <repo> rev-list --count --since=<ISO-week-Monday> --until=<ISO-week-Sunday> HEAD; git -C <repo> rev-list --count --since=<measured-date-6-days>T00:00:00 --until=<measured-date>T23:59:59 HEAD; git -C <repo> log -1 --format=%cs HEAD; ls <repo>/issues | grep '^[0-9].*\.md$'; grep -l -E '^\*\*Status\*\*: *(Closed|Done|Resolved|Fixed|Complete)' <repo>/issues/*.md | wc -l; ls <repo>/docs/studies/*.md
repositories behind spec project ids in ~/projects; private-repo filter is a safety net and matches no spec project today; missing repos reported separately; seven calendar days ending on measured date in the measuring host's local timezone; commit counts include all authors and merge commits reachable from HEAD · measured 2026-10-26
Studies: 50
git -C <repo> rev-list --count HEAD; git -C <repo> rev-list --count --since=<ISO-week-Monday> --until=<ISO-week-Sunday> HEAD; git -C <repo> rev-list --count --since=<measured-date-6-days>T00:00:00 --until=<measured-date>T23:59:59 HEAD; git -C <repo> log -1 --format=%cs HEAD; ls <repo>/issues | grep '^[0-9].*\.md$'; grep -l -E '^\*\*Status\*\*: *(Closed|Done|Resolved|Fixed|Complete)' <repo>/issues/*.md | wc -l; ls <repo>/docs/studies/*.md
repositories behind spec project ids in ~/projects; private-repo filter is a safety net and matches no spec project today; missing repos reported separately; seven calendar days ending on measured date in the measuring host's local timezone; commit counts include all authors and merge commits reachable from HEAD · measured 2026-10-26
12-week commit activity
git rev-list --count --since=<Monday> --until=<Sunday> HEAD
12 latest complete ISO weeks; weekly values are from spec/metrics.yaml.