Name the file a diff row belongs to in the repo's terms

The identity of a row is reported in the repo's terms already: the pane
previewing the custom patch shows a diff of the two trees the patch was
materialized into, and the paths of those trees are mapped back to the
repo's files before anything sees them. Asking which file a row belongs
to, which file navigation does, was the one query that skipped that step
and answered with the tree's path.

Pull the mapping out of inRepoTerms so that it can be applied to a bare
path, and put filePaths through it. A menu listing the files of the diff
will want to show them by name; where a renderer states the path of each
side of a change, this also has both halves belong to one file rather
than to the two trees.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
This commit is contained in:
Stefan Haller
2026-09-27 18:26:56 +02:00
co-authored by Claude Opus 5
parent 83450db146
commit 2bf39e0f0c
@@ -79,16 +79,26 @@ func (self *DiffLineHelper) ChangeLineOrdinals(
// while the diff's text names the trees where an ordinary diff has git's a/ and b/
// prefixes and so needs nothing.
func (self *DiffLineHelper) inRepoTerms(view *gocui.View, infos []types.DiffLineInfo) []types.DiffLineInfo {
toRepoTerms := self.repoTermsMapper(view)
return lo.Map(infos, func(info types.DiffLineInfo, _ int) types.DiffLineInfo {
info.Path = toRepoTerms(info.Path)
return info
})
}
// repoTermsMapper returns how a path recovered from view is brought into the repo's
// terms, for the callers that have a path rather than a whole identity to bring. The
// mapping is worked out once, per view rather than per path.
func (self *DiffLineHelper) repoTermsMapper(view *gocui.View) func(string) string {
if !self.ShowsCustomPatch(view) {
return infos
return func(path string) string { return path }
}
worktreePath := self.c.Git().RepoPaths.WorktreePath()
treesDir := self.c.Git().Patch.PatchBuilder.TempDir()
return lo.Map(infos, func(info types.DiffLineInfo, _ int) types.DiffLineInfo {
info.Path = repoPathOfTreePath(info.Path, treesDir, worktreePath)
return info
})
return func(path string) string {
return repoPathOfTreePath(path, treesDir, worktreePath)
}
}
// repoPathOfTreePath maps a path under one of the trees the custom patch was materialized
@@ -336,14 +346,19 @@ func (self *DiffLineHelper) AdjacentFile(view *gocui.View, anchorViewLine int, f
return view.ViewLineForBufferLine(target)
}
// filePaths resolves view's rendered diff to the path each buffer line belongs to,
// empty for a row whose identity couldn't be recovered.
// filePaths resolves view's rendered diff to the path each buffer line belongs to, in
// the repo's terms, and empty for a row whose identity couldn't be recovered. Naming the
// files the way the rest of the queries name them means a row of the custom patch's
// preview belongs to the repo's file rather than to the copy of it in the tree the patch
// was materialized into, so that both halves of a change belong to the same file however
// the diff renderer states them.
func (self *DiffLineHelper) filePaths(view *gocui.View) []string {
resolved := self.resolveDiffLines(view.DiffLineContents())
toRepoTerms := self.repoTermsMapper(view)
paths := make([]string, len(resolved))
for i, row := range resolved {
if row.ok {
paths[i] = row.info.Path
paths[i] = toRepoTerms(row.info.Path)
}
}
return paths