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Extend :Gbrowse to support line anchors for commits #1171

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Extend :Gbrowse to support line anchors for commits #1171

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36 changes: 34 additions & 2 deletions autoload/fugitive.vim
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Original file line number Diff line number Diff line change
Expand Up @@ -7400,8 +7400,8 @@ function! fugitive#BrowseCommand(line1, count, range, bang, mods, arg, ...) abor
endif
endif

let line1 = a:count > 0 && type ==# 'blob' ? a:line1 : 0
let line2 = a:count > 0 && type ==# 'blob' ? a:count : 0
let line1 = a:count > 0 && type ==# 'blob' || type ==# 'commit' ? a:line1 : 0
let line2 = a:count > 0 && type ==# 'blob' || type ==# 'commit' ? a:count : 0
if empty(commit) && path !~# '^\.git/'
if a:count < 0 && !empty(merge)
let commit = merge
Expand Down Expand Up @@ -7465,6 +7465,21 @@ function! fugitive#BrowseCommand(line1, count, range, bang, mods, arg, ...) abor
\ 'line1': line1,
\ 'line2': line2}

if type ==# 'commit' && a:count
let pos1 = s:DiffLines(line1)
let pos2 = s:DiffLines(line2)
if !empty(pos1) && !empty(pos2)
let pattern = ' \(\/dev\/null\|[abciow12]\/\)\zs.*'
let opts.path = matchstr(getline(search('^+++'.pattern,'bnW')), '^+++'.pattern)
let opts.line1 = getline(line1)[0] == '-' ? 0 : pos1.new
let opts.line2 = getline(line2)[0] == '-' ? 0 : pos2.new
let opts.ancestor = {}
let opts.ancestor.path = matchstr(getline(search('^---'.pattern,'bnW')), '^---'.pattern)
let opts.ancestor.line1 = getline(line1)[0] == '+' ? 0 : pos1.old
let opts.ancestor.line2 = getline(line2)[0] == '+' ? 0 : pos2.old
endif
endif

let url = ''
for Handler in get(g:, 'fugitive_browse_handlers', [])
let url = call(Handler, [copy(opts)])
Expand All @@ -7483,6 +7498,23 @@ function! fugitive#BrowseCommand(line1, count, range, bang, mods, arg, ...) abor
endtry
endfunction

function! s:DiffLines(line) abort
try
let offsets = {' ':0,'+':0,'-':0}
let offsets[getline(a:line)[0]] -= 0 " throw if on hunk header
let lnum = a:line - 1
while getline(lnum) !~# '^@@ -\d\+\%(,\d\+\)\= +\d\+'
let offsets[getline(lnum)[0]] += 1
let lnum -= 1
endwhile
return {
\ 'old': offsets['-'] + offsets[' '] + matchstr(getline(lnum), '-\zs\d\+'),
\ 'new': offsets['+'] + offsets[' '] + matchstr(getline(lnum), '+\zs\d\+'),
\}
catch /^Vim\%((\a\+)\)\=:E734/
endtry
endfunction

" Section: Go to file

let s:ref_header = '\%(Merge\|Rebase\|Upstream\|Pull\|Push\)'
Expand Down