diff options
| -rw-r--r-- | runtime/lua/vim/filetype.lua | 30 |
1 files changed, 17 insertions, 13 deletions
diff --git a/runtime/lua/vim/filetype.lua b/runtime/lua/vim/filetype.lua index 179a6312de..18fa1ed658 100644 --- a/runtime/lua/vim/filetype.lua +++ b/runtime/lua/vim/filetype.lua @@ -2598,20 +2598,24 @@ function M.match(args) contents = M._getlines(bufnr) end end - -- If name is nil, catch any errors from the contents filetype detection function. - -- If the function tries to use the filename that is nil then it will fail, - -- but this enables checks which do not need a filename to still work. - local ok - ok, ft, on_detect = pcall( - require('vim.filetype.detect').match_contents, - contents, - name, - function(ext) - return dispatch(extension[ext], name, bufnr) + + -- Match based solely on content only if there is any content (for performance) + if not (#contents == 1 and contents[1] == '') then + -- If name is nil, catch any errors from the contents filetype detection function. + -- If the function tries to use the filename that is nil then it will fail, + -- but this enables checks which do not need a filename to still work. + local ok + ok, ft, on_detect = pcall( + require('vim.filetype.detect').match_contents, + contents, + name, + function(ext) + return dispatch(extension[ext], name, bufnr) + end + ) + if ok then + return ft, on_detect end - ) - if ok then - return ft, on_detect end end end |