runtime/ftplugin/gprof.vim

" Language:     gprof
" Maintainer:   Dominique Pelle <dominique.pelle@gmail.com>
" Contributors: Doug Kearns <dougkearns@gmail.com>
" Last Change:  2021 Sep 19

" When cursor is on one line of the gprof call graph,
" calling this function jumps to this function in the call graph.
if exists("b:did_ftplugin")
  finish
endif
let b:did_ftplugin=1

func! <SID>GprofJumpToFunctionIndex()
  let l:line = getline('.')
  if l:line =~ '[\d\+\]$'
    " We're in a line in the call graph.
    norm! $y%
    call search('^' . escape(@", '[]'), 'sw')
    norm! zz
  elseif l:line =~ '^\(\s*[0-9\.]\+\)\{3}\s\+'
    " We're in line in the flat profile.
    norm! 55|eby$
    call search('^\[\d\+\].*\d\s\+' .  escape(@", '[]*.') . '\>', 'sW')
    norm! zz
  endif
endfunc

if !exists("no_plugin_maps") && !exists("no_gprof_maps")
  " Pressing <C-]> on a line in the gprof flat profile or in
  " the call graph, jumps to the corresponding function inside
  " the flat profile.
  map <buffer> <silent> <C-]> :call <SID>GprofJumpToFunctionIndex()<CR>
  let b:undo_ftplugin = "silent! unmap <buffer> <C-]>"
endif

" vim:sw=2 fdm=indent