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fix(:bcd): do not "inherit" buffer-local dir

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Problem:
Buffer-local CWD (:bcd) is "sticky", similar to window-local CWD (:lcd).
But this contradicts one of its main benefits: per-buffer "project root"
for LSP, OSC7.

Other problems:
- A buffer created with :edit/:enew/:new silently inherits b_localdir
  (and b_prevdir) from the previous buffer.
- curbuf_reusable() refuses to recycle a scratch buffer that has
  `b_localdir`.
- After :new/:vnew/:tabnew the CWD sticks to previous buffer's
  `b_localdir` even though the new curbuf has none, so :new is not
  equivalent to ":split | enew", and getcwd() disagrees with
  haslocaldir().
- Requires "which buffer spawned this buffer" semantics that no other
  buffer-local state has.

Solution:
Drop sticky/inherit behavior of buffer-local CWD (:bcd).

- do_ecmd: always apply the new curbuf's dir (`fix_current_dir`), like
  `do_autochdir` already does. :tabnew from a :bcd buffer now reverts to
  global CWD (and fires DirChanged), same as :tabnew from a :lcd window.
- curbuf_reusable(): recycling a scratch buffer frees its b_localdir.

To get sticky/inherit behavior of CWD, use `:lcd`.
This commit is contained in:
Justin M. Keyes
2026-08-04 17:13:32 +02:00
parent 46ca236525
commit 9cd4dd1c19
14 changed files with 140 additions and 135 deletions
Download Patch File Download Diff File Expand all files Collapse all files

76
test/functional/autocmd/dirchanged_spec.lua
View File

@@ -6,7 +6,6 @@ local describe, it, before_each, setup, teardown =
local clear = n.clear
local command = n.command
local eq = t.eq
local pcall_err = t.pcall_err
local eval = n.eval
local request = n.request
local is_os = t.is_os
@@ -162,7 +161,7 @@ describe('autocmd DirChanged and DirChangedPre', function()
eq('E344:', string.match(err3, 'E%d*:'))
end)
it("are triggered by 'autochdir'", function()
it("triggered by 'autochdir'", function()
command('set autochdir')
command('split ' .. dirs[1] .. '/foo')
@@ -181,7 +180,7 @@ describe('autocmd DirChanged and DirChangedPre', function()
eq(2, eval('g:cdcount'))
end)
it('do not trigger if directory has not changed', function()
it('not triggered if directory has not changed', function()
command('lcd ' .. dirs[1])
eq({ directory = dirs[1], scope = 'window', changed_window = false }, eval('g:evpre'))
eq({ cwd = dirs[1], scope = 'window', changed_window = false }, eval('g:ev'))
@@ -299,7 +298,7 @@ describe('autocmd DirChanged and DirChangedPre', function()
end
end)
it('are triggered by switching to win/tab with different CWD #6054', function()
it('triggered by switching to win/tab with different CWD #6054', function()
command('lcd ' .. dirs[3]) -- window 3
command('split ' .. dirs[2] .. '/foo') -- window 2
command('lcd ' .. dirs[2])
@@ -376,7 +375,7 @@ describe('autocmd DirChanged and DirChangedPre', function()
end
end)
it('are triggered by switching to buf/tab with different CWD', function()
it('triggered by switching to buf/tab with different CWD', function()
local files = {
dirs[1] .. '/file',
dirs[2] .. '/file',
@@ -400,9 +399,10 @@ describe('autocmd DirChanged and DirChangedPre', function()
eq(5, eval('g:cdprecount'))
eq(5, eval('g:cdcount'))
command('tabnew') -- tab 2 (tab-local CWD)
eq(5, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(5, eval('g:cdcount')) -- same CWD, no DirChanged event
command('tabnew') -- tab 2: its new empty buffer has no local CWD, reverts to global
eq({ cwd = curdir, scope = 'global', changed_window = false }, eval('g:ev'))
eq(6, eval('g:cdprecount'))
eq(6, eval('g:cdcount'))
command('tcd ' .. dirs[2])
command('tabnext') -- tab 1 (no tab-local CWD)
eq({ directory = dirs[3], scope = 'buffer', changed_window = true }, eval('g:evpre'))
@@ -414,55 +414,55 @@ describe('autocmd DirChanged and DirChangedPre', function()
eq({ cwd = dirs[2], scope = 'tabpage', changed_window = true }, eval('g:ev'))
eq('tabpage', eval('g:amatchpre'))
eq('tabpage', eval('g:amatch'))
eq(8, eval('g:cdprecount'))
eq(8, eval('g:cdcount'))
eq(9, eval('g:cdprecount'))
eq(9, eval('g:cdcount'))
command('tabnext') -- tab 1
command('b ' .. files[2]) -- buffer 2
eq(10, eval('g:cdprecount'))
eq(10, eval('g:cdcount'))
eq(11, eval('g:cdprecount'))
eq(11, eval('g:cdcount'))
command('tabnext') -- tab 2 (has the *same* CWD)
eq(10, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(10, eval('g:cdcount')) -- same CWD, no DirChanged event
eq(11, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(11, eval('g:cdcount')) -- same CWD, no DirChanged event
if is_os('win') then
command('tabnew') -- tab 3
eq(10, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(10, eval('g:cdcount')) -- same CWD, no DirChanged event
eq(11, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(11, eval('g:cdcount')) -- same CWD, no DirChanged event
command('tcd ' .. dirs[2])
eq(10, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(10, eval('g:cdcount')) -- same CWD, no DirChanged event
eq(11, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(11, eval('g:cdcount')) -- same CWD, no DirChanged event
command('tabnext') -- tab 1
eq(10, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(10, eval('g:cdcount')) -- same CWD, no DirChanged event
eq(11, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(11, eval('g:cdcount')) -- same CWD, no DirChanged event
command('tabprevious') -- tab 3
eq(10, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(10, eval('g:cdcount')) -- same CWD, no DirChanged event
eq(11, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(11, eval('g:cdcount')) -- same CWD, no DirChanged event
command('tabprevious') -- tab 2
eq(10, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(10, eval('g:cdcount')) -- same CWD, no DirChanged event
eq(11, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(11, eval('g:cdcount')) -- same CWD, no DirChanged event
command('tabprevious') -- tab 1
eq(10, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(10, eval('g:cdcount')) -- same CWD, no DirChanged event
eq(11, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(11, eval('g:cdcount')) -- same CWD, no DirChanged event
command('bcd ' .. dirs[2]) -- buffer 2
eq(10, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(10, eval('g:cdcount')) -- same CWD, no DirChanged event
eq(11, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(11, eval('g:cdcount')) -- same CWD, no DirChanged event
command('tabnext') -- tab 2
eq(10, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(10, eval('g:cdcount')) -- same CWD, no DirChanged event
eq(11, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(11, eval('g:cdcount')) -- same CWD, no DirChanged event
command('tabnext') -- tab 3
eq(10, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(10, eval('g:cdcount')) -- same CWD, no DirChanged event
eq(11, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(11, eval('g:cdcount')) -- same CWD, no DirChanged event
command('tabnext') -- tab 1
eq(10, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(10, eval('g:cdcount')) -- same CWD, no DirChanged event
eq(11, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(11, eval('g:cdcount')) -- same CWD, no DirChanged event
command('tabprevious') -- tab 3
eq(10, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(10, eval('g:cdcount')) -- same CWD, no DirChanged event
eq(11, eval('g:cdprecount')) -- same CWD, no DirChangedPre event
eq(11, eval('g:cdcount')) -- same CWD, no DirChanged event
end
end)
it('are triggered by switching to buf/win with different CWD', function()
it('triggered by switching to buf/win with different CWD', function()
command('lcd ' .. dirs[3]) -- window 3
command(('split %s/file'):format(dirs[2])) -- window 2
command('lcd ' .. dirs[2])
@@ -511,7 +511,7 @@ describe('autocmd DirChanged and DirChangedPre', function()
eq(8, eval('g:cdcount')) -- no DirChanged event, window-local CWD has higher priority
end)
it('are triggered by nvim_set_current_dir()', function()
it('triggered by nvim_set_current_dir()', function()
request('nvim_set_current_dir', dirs[1])
eq({ directory = dirs[1], scope = 'global', changed_window = false }, eval('g:evpre'))
eq({ cwd = dirs[1], scope = 'global', changed_window = false }, eval('g:ev'))