Unison Files

What's New

Features and new behavior: - New list-fuzzy / lsf command allows you to quickly skim a project's namespaces using fzf, and list one upon selection. - New branch.squash command copies the current branch, but with a collapsed history. - add and update are the same command now. - On name resolution failure, UCM now suggests similar names, (Thanks @xmbhasin!) - edit.namespace now includes . as its top fzf suggestion. - We added tab-completion and fzf completion for file arguments. - Releases will include linux-arm64 builds going forward.

Experimental: - Setting the UNISON_USE_UPDATE_V2 environment variable enables a new workflow for update, which puts you into a new branch to complete the update, analogous to the merge command. More details at https://github.com/unisonweb/unison/pull/5710.

Speedups: - Lots of work to improve ability handler optimizations. - Faster merge startup.

Fixes: - The scratch file watcher behaves more predictably. - upgrade avoids ending up with __2 names in some cases - The transcript runner no longer bombs if ucm is open due to ports being in use. - Runtime panics can produce better error messages. - back no longer fails due to navigating to a deleted branch. - Fixes a runtime issue involving nested lambdas

All PRs Since Last Release

• perf: fetch unique type guids from merge parents more efficiently by @mitchellwrosen in https://github.com/unisonweb/unison/pull/5713
• bugfix: fix file watch buffering behavior by @mitchellwrosen in https://github.com/unisonweb/unison/pull/5719
• Include root namespace as option in fzf namespace args by @ChrisPenner in https://github.com/unisonweb/unison/pull/5727
• identify renames in merges by @mitchellwrosen in https://github.com/unisonweb/unison/pull/5716
• Fix a problem with floating w/r/t some enclosed terms by @dolio in https://github.com/unisonweb/unison/pull/5730
• tweak: amend file-watching logic to not toss events older than 1s by @mitchellwrosen in https://github.com/unisonweb/unison/pull/5729
• make add an alias of update by @mitchellwrosen in https://github.com/unisonweb/unison/pull/5705
• Support 'nicer' ways of writing affine handlers by @dolio in https://github.com/unisonweb/unison/pull/5715
• add more terms/types fields to branch object by @mitchellwrosen in https://github.com/unisonweb/unison/pull/5725
• Fix a bug in one of the new peephole optimizations by @dolio in https://github.com/unisonweb/unison/pull/5731
• hide ucm output in jit tests by @aryairani in https://github.com/unisonweb/unison/pull/5735
• windows 2019 -> 2022 by @ceedubs in https://github.com/unisonweb/unison/pull/5732
• Implement branch.squash by @ChrisPenner in https://github.com/unisonweb/unison/pull/5696
• Fix affine handler transcript by @dolio in https://github.com/unisonweb/unison/pull/5743
• fix typo by @aryairani in https://github.com/unisonweb/unison/pull/5739
• Fix a variable capture during optimization. by @dolio in https://github.com/unisonweb/unison/pull/5744
• Relax a criterion for recognizing affine handlers by @dolio in https://github.com/unisonweb/unison/pull/5745
• adjust slurp output on update branches by @mitchellwrosen in https://github.com/unisonweb/unison/pull/5711
• add a dedicated tmate workflow by @aryairani in https://github.com/unisonweb/unison/pull/5755
• try bumping racket version to 8.17 to fix CI errors in windows-2022 by @aryairani in https://github.com/unisonweb/unison/pull/5748
• feat: make upgrade rename a __N suffix by @mitchellwrosen in https://github.com/unisonweb/unison/pull/5750
• Laxify code-server port binding by @ChrisPenner in https://github.com/unisonweb/unison/pull/5754
• Improve optimizer to recognize more affine handlers by @dolio in https://github.com/unisonweb/unison/pull/5753
• add a way to compare Tls sockets. by @stew in https://github.com/unisonweb/unison/pull/5756
• Fix some variable capture potential in the optimizations by @dolio in https://github.com/unisonweb/unison/pull/5757
• try replacing windows 2022 with 2025 by @aryairani in https://github.com/unisonweb/unison/pull/5740
• a manual transcript for some public tests by @aryairani in https://github.com/unisonweb/unison/pull/5752
• update unison racket lib if not already installed by @aryairani in https://github.com/unisonweb/unison/pull/5760
• i guess new racket includes libb2 by @aryairani in https://github.com/unisonweb/unison/pull/5761
• ors instead of ands by @aryairani in https://github.com/unisonweb/unison/pull/5762
• overhaul update flow by @mitchellwrosen in https://github.com/unisonweb/unison/pull/5710
• Make bpoke(Off) strict in its closure argument by @dolio in https://github.com/unisonweb/unison/pull/5763
• Improve caught runtime panics in tryEval by @dolio in https://github.com/unisonweb/unison/pull/5759
• Try to improve errors during reflection by @dolio in https://github.com/unisonweb/unison/pull/5766
• add the arm runners everywhere by @aryairani in https://github.com/unisonweb/unison/pull/5765
• update transcripts by @aryairani in https://github.com/unisonweb/unison/pull/5771
• bugfix: make getProjectBranchRootCausal not fail if branch doesn't exist by @mitchellwrosen in https://github.com/unisonweb/unison/pull/5770
• bugfix: use old branch ppe when rendering deleted things by @mitchellwrosen in https://github.com/unisonweb/unison/pull/5767
• silence load output for programmatically-generated update file activity by @mitchellwrosen in https://github.com/unisonweb/unison/pull/5768
• update failed update output by @mitchellwrosen in https://github.com/unisonweb/unison/pull/5769
• add list-fuzzy / lsf command by @aryairani in https://github.com/unisonweb/unison/pull/5773
• bugfix: make back not fail on deleted branch by @mitchellwrosen in https://github.com/unisonweb/unison/pull/5772
• Revert change to trigger fzf on no-args ls by @ChrisPenner in https://github.com/unisonweb/unison/pull/5758
• Add tab-completion and fzf completion for file arguments by @ChrisPenner in https://github.com/unisonweb/unison/pull/5776
• Fix some variable naming problems with new optimizations by @dolio in https://github.com/unisonweb/unison/pull/5778
• Error Messages: on name resolution failure, suggest similar names by @xmbhasin in https://github.com/unisonweb/unison/pull/5522
• Small update to [#5522] by @aryairani in https://github.com/unisonweb/unison/pull/5779

Full Changelog: https://github.com/unisonweb/unison/compare/release/0.5.41...release/0.5.42