Show diff for renamed file when filtering by path #4750
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…ile with renames The test shows that selecting a commit before the rename shows an empty diff, and selecting the rename itself shows an added file rather than a rename.
The combination of --abbrev=40 and %h can be shortened to %H.
I can only guess what happened here: in aa750c0, this code to manually load the reflog commits was added, to make sorting branches by recency work when the reflog is filtered by path. At that time we didn't have separate ReflogCommits and FilteredReflogCommits models yet. Then, FilteredReflogCommits was introduced (in 8822c40), probably for the very purpose of being able to get rid of this again; but then it was forgotton to actually get rid of it. The funny thing is that the introduction of FilteredReflogCommits happened in the very next commit, 15 minutes later.
Using the filtered one is probably not a good idea. It didn't do much harm because the split of ReflogCommits and FilteredReflogCommits doesn't really work right now (FilteredReflogCommits is always the same as ReflogCommits, even in filtering mode), but we'll fix this in the next commit.
Recycle reflog commits only for the non-filtered ones. If we're not filtering, FilteredReflogCommits and ReflogCommits are the same. If we then enter filtering and get reflog entries again, and pass a lastReflogCommit, we'd recycle the previous FilteredReflogCommits, which are unfiltered, so that's no good. Work around this by simply never using the recycle mechanism when getting the filtered reflog commits. We could do better by remembering what the last filter path or author was, and only suppressing the recycling when it changed; but that's more complexity than I want to add, so hopefully this is good enough.
I don't know why this function argument was added, but I don't like unnecessary indirections, so I'm removing it as SubCommitsHelper has access to everything it needs to do it itself.
It is good practice to use a -- argument even if no further arguments follow. Doesn't really make a difference for this particular command though, I think.
These are very similar in that they call RunAndProcessLines on a git log command and then process lines to create commits. Extract this into a common helper function. At the moment this doesn't gain us much, but in the next commit we will extend this helper function considerably with filter path logic, which would otherwise have to be duplicated in both places.
When filtering for a file path we use the --follow option for "git log", so it will follow renames of the file, which is great. However, if you then selected one of the commits before a rename, you didn't see a diff, because we would pass the original filter path to the "git show" call. To fix this, call git log with the --name-status option when filtering by path, so that each commit reports which file paths are touched in this commit; remember these in the commit object, so that we can pass them to the "git show" call later. Be careful not to store too many such paths unnecessarily. When filtering by folder rather than file, all these paths will necessarily be inside the original filter path, so detect this and don't store them in this case. There is some unfortunate code duplication between loading commits and loading reflog commits, which I am too lazy to clean up right now.
When shift-selecting a range of commits across a file rename in filtering-by-path mode, the diff currently shows an added file rather than a renamed file. Add a test that demonstrates this, we'll fix this in the next commit.
We need to pass the union of filter paths at both ends of the range.
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This MR contains the following updates: | Package | Update | Change | |---|---|---| | [jesseduffield/lazygit](https://github.com/jesseduffield/lazygit) | minor | `v0.53.0` -> `v0.54.0` | MR created with the help of [el-capitano/tools/renovate-bot](https://gitlab.com/el-capitano/tools/renovate-bot). **Proposed changes to behavior should be submitted there as MRs.** --- ### Release Notes <details> <summary>jesseduffield/lazygit (jesseduffield/lazygit)</summary> ### [`v0.54.0`](https://github.com/jesseduffield/lazygit/releases/tag/v0.54.0) [Compare Source](jesseduffield/lazygit@v0.53.0...v0.54.0) <!-- Release notes generated using configuration in .github/release.yml at v0.54.0 --> Again we don't have any major new features this time (unless you count the support for alt-backspace for deleting words in the commit message editor, which is one of my favorite additions), but lots of smaller quality-of-life improvements and bug fixes. The most notable one is probably the fix for the stale index.lock problem, which was a very long-standing bug that seemed to affect some users much more than others for some reason. #### What's Changed ##### Enhancements 🔥 - Add confirmation for hard reset by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4704 - Provide user config defaults for UI-changeable settings by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4717 - Improve mouse handling of suggestions panel by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4726 - Add new command "Checkout previous branch" by [@​kyu08](https://github.com/kyu08) in jesseduffield/lazygit#4728 - Add confirmation for nuking the working tree by [@​DawidPietrykowski](https://github.com/DawidPietrykowski) in jesseduffield/lazygit#4727 - Support Alt+Backspace for word deletion in text areas by [@​rtzll](https://github.com/rtzll) in jesseduffield/lazygit#4741 - Don't use hunk mode for added or deleted files even when useHunkModeInStagingView config is on by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4758 - Show \[0] keybinding in main view title by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4754 - Draw divergence from base branch right-aligned in branches view by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4785 - Enable hunk staging mode by default by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4780 ##### Fixes 🔧 - Fix scrolling hunk into view when selecting next hunk by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4709 - Fix stale main view content when entering/exiting filtering view by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4719 - Detect double-clicks properly by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4725 - Fix commit searching during rebase or in divergence from upstream view by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4730 - Fix amending commits whose commit message is empty by [@​aidancz](https://github.com/aidancz) in jesseduffield/lazygit#4732 - Several small fixes to filtering mode (by path or author) by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4749 - Show diff for renamed file when filtering by path by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4750 - Allow rewording or dropping commits in filtering mode by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4756 - Fix index out of bounds panic when repository has massive tags by [@​chojs23](https://github.com/chojs23) in jesseduffield/lazygit#4776 - When pressing `a` to stage all files, don't include untracked files when showing only tracked files by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4779 - Fix commit hash colors when filtering by path or aythor by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4789 - Improve temp dir handling by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4784 - Terminate git processes more gracefully to avoid the stale index.lock problem by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4782 ##### Maintenance ⚙️ - Raise sponsors MRs as a draft by [@​jesseduffield](https://github.com/jesseduffield) in jesseduffield/lazygit#4694 - Update the peter-evans/create-pull-request action to v7 by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4695 - Update release workflow by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4703 - Clean up the .gitignore file by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4706 - Remove unused code and texts by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4715 - Remove deprecated edit configs by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4716 - Bump minimum required git version to 2.32 by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4718 - Use a better way of pinning the version of golangci-lint by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4733 - Make the minimum required git version a placeholder in the error text by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4778 - refactor: use slices.Equal to simplify code by [@​jishudashu](https://github.com/jishudashu) in jesseduffield/lazygit#4764 ##### Docs 📖 - Fix broken markdown in auto-generated keybindings documentation by [@​KEY60228](https://github.com/KEY60228) in jesseduffield/lazygit#4690 - Remove the homebrew tap from the readme by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4705 ##### I18n 🌎 - Update translations from Crowdin by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4791 ##### Performance Improvements 📊 - Fix performance regression on startup in repos with many tags by [@​stefanhaller](https://github.com/stefanhaller) in jesseduffield/lazygit#4777 #### New Contributors - [@​KEY60228](https://github.com/KEY60228) made their first contribution in jesseduffield/lazygit#4690 - [@​DawidPietrykowski](https://github.com/DawidPietrykowski) made their first contribution in jesseduffield/lazygit#4727 - [@​rtzll](https://github.com/rtzll) made their first contribution in jesseduffield/lazygit#4741 - [@​chojs23](https://github.com/chojs23) made their first contribution in jesseduffield/lazygit#4776 - [@​jishudashu](https://github.com/jishudashu) made their first contribution in jesseduffield/lazygit#4764 **Full Changelog**: jesseduffield/lazygit@v0.53.0...v0.54.0 </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. 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When filtering by file path for a file that was renamed at some point, we show all commits even before the rename, which is great; however when you selected a commit before the rename, the diff was empty. The commit for the rename itself would show the file as added rather than renamed.
This PR fixes that; along the way, we fix the filtered reflog display, which is supposed to filter by path like the commits view does, but this didn't work.
Fixes #4510.