refactor(highlight): unified per-line extmark builder (#144)

## Problem

`highlight_hunk` applied DiffsClear extmarks across 5 scattered sites
with
ad-hoc column arithmetic. This fragmentation produced the 1-column
DiffsClear
gap on email-quoted body context lines (#142 issue 1). A redundant
`highlight_hunk_vim_syntax` function duplicated the inline vim syntax
path,
and the deferred pass in init.lua double-called it, creating duplicate
scratch
buffers and extmarks.

## Solution

Reorganize `highlight_hunk` into two clean phases:

- **Phase 1** — multi-line syntax computation (treesitter, vim syntax,
diff
grammar, header context text). Sets syntax extmarks only, no DiffsClear.
- **Phase 2** — per-line chrome (DiffsClear, backgrounds, gutter,
overlays,
  intra-line). All non-syntax extmarks consolidated in one pass.

Hoist `new_code` to function scope (needed by `highlight_text` outside
the
`use_ts` block). Hoist `at_raw_line` so Phase 1d and Phase 2b share one
`nvim_buf_get_lines` call.

Delete `highlight_hunk_vim_syntax` (redundant with inline path). Remove
the
double-call from the deferred pass in init.lua.

Extend body prefix DiffsClear `end_col` from `qw` to `pw + qw`, fixing
the
1-column gap where native treesitter background bled through on context
lines
in email-quoted diffs (#142 issue 1).

### Email-quoted diff support

The parser now strips `> ` (and `>> `, etc.) email quote prefixes before
pattern matching, enabling syntax highlighting for diffs embedded in
email
replies and `git-send-email` / sourcehut-style patch review threads.
Each hunk stores `quote_width` so the highlight pipeline can apply
`DiffsClear` at the correct column offsets to suppress native treesitter
on quoted regions.

Closes #141

### #142 status after this PR

| Sub-issue | Status |
|-----------|--------|
| 1. Col gap on context lines | Fixed |
| 2. Bare `>` context lines | Improved, edge case remains |
| 3. Diff prefix marker fg | Not addressed (follow-up) |
This commit is contained in:
Barrett Ruth 2026-03-05 09:01:22 -05:00 committed by GitHub
parent 7a3c4ea01e
commit 7106bcc291
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
11 changed files with 919 additions and 102 deletions

View file

@ -287,7 +287,7 @@ describe('highlight', function()
local extmarks = get_extmarks(bufnr)
local has_diff_add = false
for _, mark in ipairs(extmarks) do
if mark[4] and mark[4].hl_group == 'DiffsAdd' then
if mark[4] and mark[4].line_hl_group == 'DiffsAdd' then
has_diff_add = true
break
end
@ -320,7 +320,7 @@ describe('highlight', function()
local extmarks = get_extmarks(bufnr)
local has_diff_delete = false
for _, mark in ipairs(extmarks) do
if mark[4] and mark[4].hl_group == 'DiffsDelete' then
if mark[4] and mark[4].line_hl_group == 'DiffsDelete' then
has_diff_delete = true
break
end
@ -362,6 +362,122 @@ describe('highlight', function()
delete_buffer(bufnr)
end)
it('line bg uses line_hl_group not hl_group with end_row', function()
local bufnr = create_buffer({
'@@ -1,1 +1,2 @@',
' local x = 1',
'+local y = 2',
})
local hunk = {
filename = 'test.lua',
lang = 'lua',
start_line = 1,
lines = { ' local x = 1', '+local y = 2' },
}
highlight.highlight_hunk(
bufnr,
ns,
hunk,
default_opts({ highlights = { background = true } })
)
local extmarks = get_extmarks(bufnr)
for _, mark in ipairs(extmarks) do
local d = mark[4]
assert.is_not_equal('DiffsAdd', d and d.hl_group)
assert.is_not_equal('DiffsDelete', d and d.hl_group)
end
delete_buffer(bufnr)
end)
it('line bg extmark survives adjacent clear_namespace starting at next row', function()
local bufnr = create_buffer({
'diff --git a/foo.py b/foo.py',
'@@ -1,2 +1,2 @@',
'-old',
'+new',
})
local hunk = {
filename = 'foo.py',
header_start_line = 1,
start_line = 2,
lines = { '-old', '+new' },
prefix_width = 1,
}
highlight.highlight_hunk(
bufnr,
ns,
hunk,
default_opts({ highlights = { background = true, treesitter = { enabled = false } } })
)
local last_body_row = hunk.start_line + #hunk.lines - 1
vim.api.nvim_buf_clear_namespace(bufnr, ns, last_body_row + 1, last_body_row + 10)
local marks = vim.api.nvim_buf_get_extmarks(
bufnr,
ns,
{ last_body_row, 0 },
{ last_body_row, -1 },
{ details = true }
)
local has_line_bg = false
for _, mark in ipairs(marks) do
if mark[4] and mark[4].line_hl_group == 'DiffsAdd' then
has_line_bg = true
end
end
assert.is_true(has_line_bg)
delete_buffer(bufnr)
end)
it('clear range covers last body line of hunk with header', function()
local bufnr = create_buffer({
'diff --git a/foo.py b/foo.py',
'index abc..def 100644',
'--- a/foo.py',
'+++ b/foo.py',
'@@ -1,3 +1,3 @@',
' ctx',
'-old',
'+new',
})
local hunk = {
filename = 'foo.py',
header_start_line = 1,
start_line = 5,
lines = { ' ctx', '-old', '+new' },
prefix_width = 1,
}
highlight.highlight_hunk(
bufnr,
ns,
hunk,
default_opts({ highlights = { background = true, treesitter = { enabled = false } } })
)
local last_body_row = hunk.start_line + #hunk.lines - 1
local clear_start = hunk.header_start_line - 1
local clear_end = hunk.start_line + #hunk.lines
vim.api.nvim_buf_clear_namespace(bufnr, ns, clear_start, clear_end)
local marks = vim.api.nvim_buf_get_extmarks(
bufnr,
ns,
{ last_body_row, 0 },
{ last_body_row, -1 },
{ details = false }
)
assert.are.equal(0, #marks)
delete_buffer(bufnr)
end)
it('still applies background when treesitter disabled', function()
local bufnr = create_buffer({
'@@ -1,1 +1,2 @@',
@ -386,7 +502,7 @@ describe('highlight', function()
local extmarks = get_extmarks(bufnr)
local has_diff_add = false
for _, mark in ipairs(extmarks) do
if mark[4] and mark[4].hl_group == 'DiffsAdd' then
if mark[4] and mark[4].line_hl_group == 'DiffsAdd' then
has_diff_add = true
break
end
@ -500,7 +616,7 @@ describe('highlight', function()
local extmarks = get_extmarks(bufnr)
local has_diff_add = false
for _, mark in ipairs(extmarks) do
if mark[4] and mark[4].hl_group == 'DiffsAdd' then
if mark[4] and mark[4].line_hl_group == 'DiffsAdd' then
has_diff_add = true
break
end
@ -585,7 +701,7 @@ describe('highlight', function()
local found = false
for _, mark in ipairs(extmarks) do
local d = mark[4]
if d and (d.hl_group == 'DiffsAdd' or d.hl_group == 'DiffsDelete') and d.hl_eol then
if d and (d.line_hl_group == 'DiffsAdd' or d.line_hl_group == 'DiffsDelete') then
found = true
end
end
@ -741,7 +857,7 @@ describe('highlight', function()
if d then
if d.hl_group == 'DiffsClear' then
table.insert(priorities.clear, d.priority)
elseif (d.hl_group == 'DiffsAdd' or d.hl_group == 'DiffsDelete') and d.hl_eol then
elseif d.line_hl_group == 'DiffsAdd' or d.line_hl_group == 'DiffsDelete' then
table.insert(priorities.line_bg, d.priority)
elseif d.hl_group == 'DiffsAddText' or d.hl_group == 'DiffsDeleteText' then
table.insert(priorities.char_bg, d.priority)
@ -842,8 +958,8 @@ describe('highlight', function()
local line_bgs = {}
for _, mark in ipairs(extmarks) do
local d = mark[4]
if d and (d.hl_group == 'DiffsAdd' or d.hl_group == 'DiffsDelete') and d.hl_eol then
line_bgs[mark[2]] = d.hl_group
if d and (d.line_hl_group == 'DiffsAdd' or d.line_hl_group == 'DiffsDelete') then
line_bgs[mark[2]] = d.line_hl_group
end
end
assert.is_nil(line_bgs[1])
@ -946,11 +1062,16 @@ describe('highlight', function()
highlight.highlight_hunk(bufnr, ns, hunk, default_opts())
local extmarks = get_extmarks(bufnr)
local content_clear_count = 0
for _, mark in ipairs(extmarks) do
if mark[4] and mark[4].hl_group == 'DiffsClear' then
assert.are.equal(2, mark[3])
assert.is_true(mark[3] == 0 or mark[3] == 2, 'DiffsClear at unexpected col ' .. mark[3])
if mark[3] == 2 then
content_clear_count = content_clear_count + 1
end
end
end
assert.are.equal(2, content_clear_count)
delete_buffer(bufnr)
end)
@ -1034,8 +1155,8 @@ describe('highlight', function()
local marker_text = {}
for _, mark in ipairs(extmarks) do
local d = mark[4]
if d and (d.hl_group == 'DiffsAdd' or d.hl_group == 'DiffsDelete') and d.hl_eol then
line_bgs[mark[2]] = d.hl_group
if d and (d.line_hl_group == 'DiffsAdd' or d.line_hl_group == 'DiffsDelete') then
line_bgs[mark[2]] = d.line_hl_group
end
if d and d.number_hl_group then
gutter_hls[mark[2]] = d.number_hl_group
@ -1245,6 +1366,467 @@ describe('highlight', function()
assert.are.equal(0, header_extmarks)
delete_buffer(bufnr)
end)
it('does not apply DiffsClear to header lines for non-quoted diffs', function()
local bufnr = create_buffer({
'diff --git a/parser.lua b/parser.lua',
'index 3e8afa0..018159c 100644',
'--- a/parser.lua',
'+++ b/parser.lua',
'@@ -1,2 +1,3 @@',
' local M = {}',
'+local x = 1',
})
local hunk = {
filename = 'parser.lua',
lang = 'lua',
start_line = 5,
lines = { ' local M = {}', '+local x = 1' },
header_start_line = 1,
header_lines = {
'diff --git a/parser.lua b/parser.lua',
'index 3e8afa0..018159c 100644',
'--- a/parser.lua',
'+++ b/parser.lua',
},
}
highlight.highlight_hunk(bufnr, ns, hunk, default_opts())
local extmarks = get_extmarks(bufnr)
for _, mark in ipairs(extmarks) do
local d = mark[4]
if d and d.hl_group == 'DiffsClear' and mark[3] == 0 and mark[2] < 4 then
error('unexpected DiffsClear on header row ' .. mark[2] .. ' for non-quoted diff')
end
end
delete_buffer(bufnr)
end)
it('preserves diff grammar treesitter on headers for non-quoted diffs', function()
local bufnr = create_buffer({
'diff --git a/parser.lua b/parser.lua',
'--- a/parser.lua',
'+++ b/parser.lua',
'@@ -1,2 +1,3 @@',
' local M = {}',
'+local x = 1',
})
local hunk = {
filename = 'parser.lua',
lang = 'lua',
start_line = 4,
lines = { ' local M = {}', '+local x = 1' },
header_start_line = 1,
header_lines = {
'diff --git a/parser.lua b/parser.lua',
'--- a/parser.lua',
'+++ b/parser.lua',
},
}
highlight.highlight_hunk(bufnr, ns, hunk, default_opts())
local extmarks = get_extmarks(bufnr)
local header_ts_count = 0
for _, mark in ipairs(extmarks) do
local d = mark[4]
if mark[2] < 3 and d and d.hl_group and d.hl_group:match('^@.*%.diff$') then
header_ts_count = header_ts_count + 1
end
end
assert.is_true(header_ts_count > 0, 'expected diff grammar treesitter on header lines')
delete_buffer(bufnr)
end)
it('applies syntax extmarks to combined diff body lines', function()
local bufnr = create_buffer({
'@@@ -1,2 -1,2 +1,3 @@@',
' local M = {}',
'+ local x = 1',
' -local y = 2',
})
local hunk = {
filename = 'test.lua',
lang = 'lua',
prefix_width = 2,
start_line = 1,
lines = { ' local M = {}', '+ local x = 1', ' -local y = 2' },
}
highlight.highlight_hunk(bufnr, ns, hunk, default_opts())
local extmarks = get_extmarks(bufnr)
local syntax_on_body = 0
for _, mark in ipairs(extmarks) do
local d = mark[4]
if mark[2] >= 1 and d and d.hl_group and d.hl_group:match('^@.*%.lua$') then
syntax_on_body = syntax_on_body + 1
end
end
assert.is_true(syntax_on_body > 0, 'expected lua treesitter syntax on combined diff body')
delete_buffer(bufnr)
end)
it('applies DiffsClear and per-char diff fg to combined diff body prefixes', function()
local bufnr = create_buffer({
'@@@',
' unchanged',
'+ added',
' -removed',
'++both',
})
local hunk = {
filename = 'test.lua',
lang = 'lua',
prefix_width = 2,
start_line = 1,
lines = { ' unchanged', '+ added', ' -removed', '++both' },
}
highlight.highlight_hunk(bufnr, ns, hunk, default_opts())
local extmarks = get_extmarks(bufnr)
local prefix_clears = {}
local plus_marks = {}
local minus_marks = {}
for _, mark in ipairs(extmarks) do
local d = mark[4]
if mark[2] >= 1 and d then
if d.hl_group == 'DiffsClear' and mark[3] == 0 and d.end_col == 2 then
prefix_clears[mark[2]] = true
end
if d.hl_group == '@diff.plus' and d.priority == 199 then
if not plus_marks[mark[2]] then
plus_marks[mark[2]] = {}
end
table.insert(plus_marks[mark[2]], mark[3])
end
if d.hl_group == '@diff.minus' and d.priority == 199 then
if not minus_marks[mark[2]] then
minus_marks[mark[2]] = {}
end
table.insert(minus_marks[mark[2]], mark[3])
end
end
end
assert.is_true(prefix_clears[1] ~= nil, 'DiffsClear on context prefix')
assert.is_true(prefix_clears[2] ~= nil, 'DiffsClear on add prefix')
assert.is_true(prefix_clears[3] ~= nil, 'DiffsClear on del prefix')
assert.is_true(prefix_clears[4] ~= nil, 'DiffsClear on both-add prefix')
assert.is_true(plus_marks[2] ~= nil, '@diff.plus on + in "+ added"')
assert.are.equal(0, plus_marks[2][1])
assert.is_true(minus_marks[3] ~= nil, '@diff.minus on - in " -removed"')
assert.are.equal(1, minus_marks[3][1])
assert.is_true(plus_marks[4] ~= nil, '@diff.plus on ++ in "++both"')
assert.are.equal(2, #plus_marks[4])
assert.is_nil(plus_marks[1], 'no @diff.plus on context " unchanged"')
assert.is_nil(minus_marks[1], 'no @diff.minus on context " unchanged"')
delete_buffer(bufnr)
end)
it('applies DiffsClear to headers for combined diffs', function()
local bufnr = create_buffer({
'diff --combined lua/merge/target.lua',
'index abc1234,def5678..ghi9012',
'--- a/lua/merge/target.lua',
'+++ b/lua/merge/target.lua',
'@@@ -1,2 -1,2 +1,3 @@@',
' local M = {}',
'+ local x = 1',
})
local hunk = {
filename = 'lua/merge/target.lua',
lang = 'lua',
prefix_width = 2,
start_line = 5,
lines = { ' local M = {}', '+ local x = 1' },
header_start_line = 1,
header_lines = {
'diff --combined lua/merge/target.lua',
'index abc1234,def5678..ghi9012',
'--- a/lua/merge/target.lua',
'+++ b/lua/merge/target.lua',
},
}
highlight.highlight_hunk(bufnr, ns, hunk, default_opts())
local extmarks = get_extmarks(bufnr)
local clear_lines = {}
for _, mark in ipairs(extmarks) do
local d = mark[4]
if d and d.hl_group == 'DiffsClear' and mark[3] == 0 and mark[2] < 4 then
clear_lines[mark[2]] = true
end
end
assert.is_true(clear_lines[0] ~= nil, 'DiffsClear on diff --combined line')
assert.is_true(clear_lines[1] ~= nil, 'DiffsClear on index line')
assert.is_true(clear_lines[2] ~= nil, 'DiffsClear on --- line')
assert.is_true(clear_lines[3] ~= nil, 'DiffsClear on +++ line')
delete_buffer(bufnr)
end)
it('applies @attribute.diff at syntax priority to @@@ line for combined diffs', function()
local bufnr = create_buffer({
'@@@ -1,2 -1,2 +1,3 @@@',
' local M = {}',
'+ local x = 1',
})
local hunk = {
filename = 'test.lua',
lang = 'lua',
prefix_width = 2,
start_line = 1,
lines = { ' local M = {}', '+ local x = 1' },
}
highlight.highlight_hunk(bufnr, ns, hunk, default_opts())
local extmarks = get_extmarks(bufnr)
local has_attr = false
for _, mark in ipairs(extmarks) do
local d = mark[4]
if mark[2] == 0 and d and d.hl_group == '@attribute.diff' and (d.priority or 0) >= 199 then
has_attr = true
end
end
assert.is_true(has_attr, '@attribute.diff at p>=199 on @@@ line')
delete_buffer(bufnr)
end)
it('applies DiffsClear to @@@ line for combined diffs', function()
local bufnr = create_buffer({
'@@@ -1,2 -1,2 +1,3 @@@',
' local M = {}',
'+ local x = 1',
})
local hunk = {
filename = 'test.lua',
lang = 'lua',
prefix_width = 2,
start_line = 1,
lines = { ' local M = {}', '+ local x = 1' },
}
highlight.highlight_hunk(bufnr, ns, hunk, default_opts())
local extmarks = get_extmarks(bufnr)
local has_at_clear = false
for _, mark in ipairs(extmarks) do
local d = mark[4]
if mark[2] == 0 and d and d.hl_group == 'DiffsClear' and mark[3] == 0 then
has_at_clear = true
end
end
assert.is_true(has_at_clear, 'DiffsClear on @@@ line')
delete_buffer(bufnr)
end)
it('applies header diff grammar at syntax priority for combined diffs', function()
local bufnr = create_buffer({
'diff --combined lua/merge/target.lua',
'index abc1234,def5678..ghi9012',
'--- a/lua/merge/target.lua',
'+++ b/lua/merge/target.lua',
'@@@ -1,2 -1,2 +1,3 @@@',
' local M = {}',
'+ local x = 1',
})
local hunk = {
filename = 'lua/merge/target.lua',
lang = 'lua',
prefix_width = 2,
start_line = 5,
lines = { ' local M = {}', '+ local x = 1' },
header_start_line = 1,
header_lines = {
'diff --combined lua/merge/target.lua',
'index abc1234,def5678..ghi9012',
'--- a/lua/merge/target.lua',
'+++ b/lua/merge/target.lua',
},
}
highlight.highlight_hunk(bufnr, ns, hunk, default_opts())
local extmarks = get_extmarks(bufnr)
local high_prio_diff = {}
for _, mark in ipairs(extmarks) do
local d = mark[4]
if
mark[2] < 4
and d
and d.hl_group
and d.hl_group:match('^@.*%.diff$')
and (d.priority or 0) >= 199
then
high_prio_diff[mark[2]] = true
end
end
assert.is_true(high_prio_diff[2] ~= nil, 'diff grammar at p>=199 on --- line')
assert.is_true(high_prio_diff[3] ~= nil, 'diff grammar at p>=199 on +++ line')
delete_buffer(bufnr)
end)
it('@diff.minus wins over @punctuation.special on combined diff headers', function()
local bufnr = create_buffer({
'diff --combined lua/merge/target.lua',
'index abc1234,def5678..ghi9012',
'--- a/lua/merge/target.lua',
'+++ b/lua/merge/target.lua',
'@@@ -1,2 -1,2 +1,3 @@@',
' local M = {}',
'+ local x = 1',
})
local hunk = {
filename = 'lua/merge/target.lua',
lang = 'lua',
prefix_width = 2,
start_line = 5,
lines = { ' local M = {}', '+ local x = 1' },
header_start_line = 1,
header_lines = {
'diff --combined lua/merge/target.lua',
'index abc1234,def5678..ghi9012',
'--- a/lua/merge/target.lua',
'+++ b/lua/merge/target.lua',
},
}
highlight.highlight_hunk(bufnr, ns, hunk, default_opts())
local extmarks = get_extmarks(bufnr)
local minus_prio, punct_prio_minus = 0, 0
local plus_prio, punct_prio_plus = 0, 0
for _, mark in ipairs(extmarks) do
local d = mark[4]
if d and d.hl_group then
if mark[2] == 2 then
if d.hl_group == '@diff.minus.diff' then
minus_prio = math.max(minus_prio, d.priority or 0)
elseif d.hl_group == '@punctuation.special.diff' then
punct_prio_minus = math.max(punct_prio_minus, d.priority or 0)
end
elseif mark[2] == 3 then
if d.hl_group == '@diff.plus.diff' then
plus_prio = math.max(plus_prio, d.priority or 0)
elseif d.hl_group == '@punctuation.special.diff' then
punct_prio_plus = math.max(punct_prio_plus, d.priority or 0)
end
end
end
end
assert.is_true(
minus_prio > punct_prio_minus,
'@diff.minus.diff should beat @punctuation.special.diff on --- line'
)
assert.is_true(
plus_prio > punct_prio_plus,
'@diff.plus.diff should beat @punctuation.special.diff on +++ line'
)
delete_buffer(bufnr)
end)
it('applies @keyword.diff on index word for combined diffs', function()
local bufnr = create_buffer({
'diff --combined lua/merge/target.lua',
'index abc1234,def5678..ghi9012',
'--- a/lua/merge/target.lua',
'+++ b/lua/merge/target.lua',
'@@@ -1,2 -1,2 +1,3 @@@',
' local M = {}',
'+ local x = 1',
})
local hunk = {
filename = 'lua/merge/target.lua',
lang = 'lua',
prefix_width = 2,
start_line = 5,
lines = { ' local M = {}', '+ local x = 1' },
header_start_line = 1,
header_lines = {
'diff --combined lua/merge/target.lua',
'index abc1234,def5678..ghi9012',
'--- a/lua/merge/target.lua',
'+++ b/lua/merge/target.lua',
},
}
highlight.highlight_hunk(bufnr, ns, hunk, default_opts())
local extmarks = get_extmarks(bufnr)
local has_keyword = false
for _, mark in ipairs(extmarks) do
local d = mark[4]
if
mark[2] == 1
and d
and d.hl_group == '@keyword.diff'
and mark[3] == 0
and (d.end_col or 0) == 5
then
has_keyword = true
end
end
assert.is_true(has_keyword, '@keyword.diff at row 1, cols 0-5')
delete_buffer(bufnr)
end)
it('applies @constant.diff on result hash for combined diffs', function()
local bufnr = create_buffer({
'diff --combined lua/merge/target.lua',
'index abc1234,def5678..ghi9012',
'--- a/lua/merge/target.lua',
'+++ b/lua/merge/target.lua',
'@@@ -1,2 -1,2 +1,3 @@@',
' local M = {}',
'+ local x = 1',
})
local hunk = {
filename = 'lua/merge/target.lua',
lang = 'lua',
prefix_width = 2,
start_line = 5,
lines = { ' local M = {}', '+ local x = 1' },
header_start_line = 1,
header_lines = {
'diff --combined lua/merge/target.lua',
'index abc1234,def5678..ghi9012',
'--- a/lua/merge/target.lua',
'+++ b/lua/merge/target.lua',
},
}
highlight.highlight_hunk(bufnr, ns, hunk, default_opts())
local extmarks = get_extmarks(bufnr)
local has_constant = false
for _, mark in ipairs(extmarks) do
local d = mark[4]
if mark[2] == 1 and d and d.hl_group == '@constant.diff' and (d.priority or 0) >= 199 then
has_constant = true
end
end
assert.is_true(has_constant, '@constant.diff on result hash')
delete_buffer(bufnr)
end)
end)
describe('extmark priority', function()

View file

@ -127,6 +127,110 @@ describe('integration', function()
end)
end)
describe('ft_retry_pending', function()
before_each(function()
rawset(vim.fn, 'did_filetype', function()
return 1
end)
require('diffs.parser')._test.ft_lang_cache = {}
end)
after_each(function()
rawset(vim.fn, 'did_filetype', nil)
end)
it('sets ft_retry_pending when nil-ft hunks detected under did_filetype', function()
local bufnr = create_buffer({
'diff --git a/app.conf b/app.conf',
'@@ -1,2 +1,2 @@',
' server {',
'- listen 80;',
'+ listen 8080;',
})
diffs.attach(bufnr)
local entry = diffs._test.hunk_cache[bufnr]
assert.is_not_nil(entry)
assert.is_nil(entry.hunks[1].ft)
assert.is_true(diffs._test.ft_retry_pending[bufnr] == true)
delete_buffer(bufnr)
end)
it('clears ft_retry_pending after scheduled callback fires', function()
local bufnr = create_buffer({
'diff --git a/app.conf b/app.conf',
'@@ -1,2 +1,2 @@',
' server {',
'- listen 80;',
'+ listen 8080;',
})
diffs.attach(bufnr)
assert.is_true(diffs._test.ft_retry_pending[bufnr] == true)
local done = false
vim.schedule(function()
done = true
end)
vim.wait(1000, function()
return done
end)
assert.is_nil(diffs._test.ft_retry_pending[bufnr])
delete_buffer(bufnr)
end)
it('invalidates cache after scheduled callback fires', function()
local bufnr = create_buffer({
'diff --git a/app.conf b/app.conf',
'@@ -1,2 +1,2 @@',
' server {',
'- listen 80;',
'+ listen 8080;',
})
diffs.attach(bufnr)
local tick_after_attach = diffs._test.hunk_cache[bufnr].tick
assert.is_true(tick_after_attach >= 0)
local done = false
vim.schedule(function()
done = true
end)
vim.wait(1000, function()
return done
end)
local entry = diffs._test.hunk_cache[bufnr]
assert.are.equal(-1, entry.tick)
assert.is_true(entry.pending_clear)
delete_buffer(bufnr)
end)
it('does not set ft_retry_pending when did_filetype() is zero', function()
rawset(vim.fn, 'did_filetype', nil)
local bufnr = create_buffer({
'diff --git a/test.sh b/test.sh',
'@@ -1,2 +1,3 @@',
' #!/usr/bin/env bash',
'-old line',
'+new line',
})
diffs.attach(bufnr)
assert.is_falsy(diffs._test.ft_retry_pending[bufnr])
delete_buffer(bufnr)
end)
it('does not set ft_retry_pending for files with resolvable ft', function()
local bufnr = create_buffer({
'M test.lua',
'@@ -1,1 +1,2 @@',
' local x = 1',
'+local y = 2',
})
diffs.attach(bufnr)
assert.is_falsy(diffs._test.ft_retry_pending[bufnr])
delete_buffer(bufnr)
end)
end)
describe('extmarks from highlight pipeline', function()
it('DiffsAdd background applied to + lines', function()
local bufnr = create_buffer({
@ -145,7 +249,7 @@ describe('integration', function()
local extmarks = get_extmarks(bufnr, ns)
local has_diff_add = false
for _, mark in ipairs(extmarks) do
if mark[4] and mark[4].hl_group == 'DiffsAdd' then
if mark[4] and mark[4].line_hl_group == 'DiffsAdd' then
has_diff_add = true
break
end
@ -171,7 +275,7 @@ describe('integration', function()
local extmarks = get_extmarks(bufnr, ns)
local has_diff_delete = false
for _, mark in ipairs(extmarks) do
if mark[4] and mark[4].hl_group == 'DiffsDelete' then
if mark[4] and mark[4].line_hl_group == 'DiffsDelete' then
has_diff_delete = true
break
end
@ -198,10 +302,10 @@ describe('integration', function()
local has_add = false
local has_delete = false
for _, mark in ipairs(extmarks) do
if mark[4] and mark[4].hl_group == 'DiffsAdd' then
if mark[4] and mark[4].line_hl_group == 'DiffsAdd' then
has_add = true
end
if mark[4] and mark[4].hl_group == 'DiffsDelete' then
if mark[4] and mark[4].line_hl_group == 'DiffsDelete' then
has_delete = true
end
end
@ -230,8 +334,8 @@ describe('integration', function()
local line_bgs = {}
for _, mark in ipairs(extmarks) do
local d = mark[4]
if d and (d.hl_group == 'DiffsAdd' or d.hl_group == 'DiffsDelete') and d.hl_eol then
line_bgs[mark[2]] = d.hl_group
if d and (d.line_hl_group == 'DiffsAdd' or d.line_hl_group == 'DiffsDelete') then
line_bgs[mark[2]] = d.line_hl_group
end
end
assert.is_nil(line_bgs[1])
@ -313,10 +417,10 @@ describe('integration', function()
local del_lines = {}
for _, mark in ipairs(extmarks) do
local d = mark[4]
if d and d.hl_group == 'DiffsAdd' and d.hl_eol then
if d and d.line_hl_group == 'DiffsAdd' then
add_lines[mark[2]] = true
end
if d and d.hl_group == 'DiffsDelete' and d.hl_eol then
if d and d.line_hl_group == 'DiffsDelete' then
del_lines[mark[2]] = true
end
end

View file

@ -163,10 +163,10 @@ describe('parser', function()
end
end)
it('stops hunk at blank line', function()
it('stops hunk at blank line when remaining counts exhausted', function()
local bufnr = create_buffer({
'M test.lua',
'@@ -1,2 +1,3 @@',
'@@ -1,1 +1,2 @@',
' local x = 1',
'+local y = 2',
'',
@ -391,6 +391,29 @@ describe('parser', function()
vim.fn.delete(repo_root, 'rf')
end)
it('detects filetype for .sh files when did_filetype() is non-zero', function()
rawset(vim.fn, 'did_filetype', function()
return 1
end)
parser._test.ft_lang_cache = {}
local bufnr = create_buffer({
'diff --git a/test.sh b/test.sh',
'@@ -1,3 +1,4 @@',
' #!/usr/bin/env bash',
' set -euo pipefail',
'-echo "running tests..."',
'+echo "running tests with coverage..."',
})
local hunks = parser.parse_buffer(bufnr)
assert.are.equal(1, #hunks)
assert.are.equal('test.sh', hunks[1].filename)
assert.are.equal('sh', hunks[1].ft)
delete_buffer(bufnr)
rawset(vim.fn, 'did_filetype', nil)
end)
it('extracts file line numbers from @@ header', function()
local bufnr = create_buffer({
'M lua/test.lua',
@ -506,7 +529,8 @@ describe('parser', function()
assert.are.equal(1, #hunks)
assert.are.equal(1, hunks[1].file_new_start)
assert.are.equal(9, hunks[1].file_new_count)
assert.is_nil(hunks[1].file_old_start)
assert.are.equal(1, hunks[1].file_old_start)
assert.are.equal(3, hunks[1].file_old_count)
delete_buffer(bufnr)
end)