macOS
Homebrewverified · 100%
brew install fmdifflocal Homebrew formula metadata
brew
Install fmdiff with Homebrew
Use FileMerge as a diff command for Subversion and Mercurial. Version 20150915 via Homebrew; verified from local package data.
install
Additional install commands
overview
Package summary
Use FileMerge as a diff command for Subversion and Mercurial
Project links
Commands and aliases
- filemerge
- fmdiff
- fmdiff3
- fmmerge
- fmresolve
history
Project history and usage
fmdiff is part of the fmscripts collection, a small set of Bash wrapper scripts that make Apple's FileMerge usable as a command-line diff and merge tool for Subversion and Mercurial workflows on macOS.
Project history
The official repository was created in 2015 and the README describes the motivation: FileMerge ships with Apple's developer tools and is useful interactively, but its `opendiff` command does not match the blocking argument conventions expected by tools such as Subversion. The scripts adapt FileMerge to those command-line interfaces.
Adoption history
Official evidence points to a niche, Mac-specific developer utility rather than a broad platform project. Its adoption surface is package-manager installation plus direct Makefile installation into `/usr/local/bin` for users who want FileMerge in Subversion or Mercurial.
How it is used
The README documents `fmdiff` as a `diff`-like command for `svn diff --diff-cmd`, `fmdiff3` as a `diff3`-like command for update and merge operations, `fmresolve` for resolving existing Subversion conflicts, and `fmmerge` as an external merge tool.
Why package nerds care
fmdiff is package-nerd significant as the kind of glue utility Homebrew preserves well: a small script set that normalizes a GUI developer tool into classic Unix command contracts. It also reflects an era when Mac developers frequently bridged Xcode tools with Subversion and Mercurial command-line workflows.
Timeline
- 2015: The fmscripts repository was created.
- 2015: The repository README documented FileMerge wrappers for Subversion and experimental Mercurial support.
Related projects
- Related official concepts and tools include Apple's FileMerge and `opendiff`, Subversion, Mercurial, `diff`, `diff3`, and the sibling fmscripts commands `fmdiff3`, `fmresolve`, `fmmerge`, and `filemerge`.
Sources
security posture
Risk level: green
narrow executable package without higher-risk signals.
Risk classifier
green risk · low confidence · appliance
Why
- narrow executable package without higher-risk signals
Signals
- metadata:no-higher-risk-signals
Install behavior
- No Homebrew post-install hook is recorded in formula metadata.
- Homebrew bottle metadata is available for 1 platform targets.
Recommended review
Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.
executables
Installed executables
| Command | Kind | Exposure | Note |
|---|---|---|---|
filemerge | cli | global executable | |
fmdiff | cli | global executable | |
fmdiff3 | cli | global executable | |
fmmerge | cli | global executable | |
fmresolve | cli | global executable |
freshness
Version and freshness
These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.
page generated2026-07-25
manager version20150915
manager updated
local dataok
upstreamnot checked
latest detectednot detected
https://github.com/brunodefraine/fmscripts
- infoNo package-manager update timestamp was available.low confidence
- infoNo cached GitHub release or tag data was available.https://github.com/brunodefraine/fmscriptsnone confidence
install metadata
Package metadata
| Package key | brew:fmdiff |
|---|---|
| Version | 20150915 |
| Package manager | Homebrew |
| Package manager page | https://formulae.brew.sh/formula/fmdiff |
| Homepage | https://github.com/brunodefraine/fmscripts |
| Repository | https://github.com/brunodefraine/fmscripts |
| Upstream docs | https://github.com/brunodefraine/fmscripts#readme |
| License | LicenseRef-Homebrew-public-domain |
| Source archive | https://github.com/brunodefraine/fmscripts/archive/refs/tags/20150915.tar.gz |
| Bottle | available (on all) |
| Homebrew post-install | not defined |
| Service | none declared |
registry facts
Source database details
| Source Database | Homebrew formula API |
|---|---|
| Tap | homebrew/core |
| Full Name | fmdiff |
| Version Scheme | 0 |
| Revision | 0 |
| Head Version | HEAD |
| Requirements |
|
| Bottle Stable Root URL | https://ghcr.io/v2/homebrew/core |
| Deprecated | no |
| Disabled | no |
| Keg Only | no |
| URL Keys |
|
source trail
Generated from repository data
This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.
Combined YAML source
View the package source record on GitHub.
Used sources
- Geiger risk classifier
- Nucleus package database
- av.db category and tag curation
- cross-ecosystem install command graph
- curated package history
- package relationship graph
- package version freshness
- package-page enrichment