vim-airline-themes/autoload/airline/extensions/tabline/unique_tail_improved.vim
Sergey Alexandrov 4a76132cbe Fix "Cannot use empty key for Dictionary" error
This commit resolves compatibility issue with fugitive plugin. When
using "Gdiff" command on some file, fugitive attempts to open the
current and the index version of the file. For example, if the file is

    /home/taketwo/path/to/the/project/README.md

then fugitive will use the following path to open the index version:

    fugitive:///home/taketwo/path/to/the/project/.git//0/README.md

Opening this file leads to a cascade of errors like this:

    Error detected while processing function
    airline#extensions#tabline#get..<SNR>162_get_buffers..<SNR>162_get_visible_buffers..airline#extensions#tabline#get_buffer_name..airline#extensions#tabline#unique_tail_improved#format:
    line   20:
    E713: Cannot use empty key for Dictionary

The problem is that when a filename like this is being tokenized, there
appear empty "" tokens, and an error occurs when using them as keys in
`path_tokens[token_index]` dictionary. This fix simply skips empty
tokens.
2014-03-10 12:27:22 +01:00

90 lines
2.7 KiB
VimL

" MIT License. Copyright (c) 2013-2014 Bailey Ling.
" vim: et ts=2 sts=2 sw=2
let s:skip_symbol = '…'
function! airline#extensions#tabline#unique_tail_improved#format(bufnr, buffers)
if len(a:buffers) <= 1 " don't need to compare bufnames if has less than one buffer opened
return airline#extensions#tabline#default#format(a:bufnr, a:buffers)
endif
let curbuf_tail = fnamemodify(bufname(a:bufnr), ':t')
let do_deduplicate = 0
let path_tokens = {}
for nr in a:buffers
let name = bufname(nr)
if !empty(name) && nr != a:bufnr && fnamemodify(name, ':t') == curbuf_tail
let do_deduplicate = 1
let tokens = reverse(split(substitute(fnamemodify(name, ':p:.:h'), '\\', '/', 'g'), '/'))
let token_index = 0
for token in tokens
if token == '' | continue | endif
if token == '.' | break | endif
if !has_key(path_tokens, token_index)
let path_tokens[token_index] = {}
endif
let path_tokens[token_index][token] = 1
let token_index += 1
endfor
endif
endfor
if do_deduplicate == 1
let path = []
let token_index = 0
for token in reverse(split(substitute(fnamemodify(bufname(a:bufnr), ':p:.:h'), '\\', '/', 'g'), '/'))
if token == '.' | break | endif
let duplicated = 0
let uniq = 1
let single = 1
if has_key(path_tokens, token_index)
let duplicated = 1
if len(keys(path_tokens[token_index])) > 1 | let single = 0 | endif
if has_key(path_tokens[token_index], token) | let uniq = 0 | endif
endif
call insert(path, {'token': token, 'duplicated': duplicated, 'uniq': uniq, 'single': single})
let token_index += 1
endfor
let buf_name = [curbuf_tail]
let has_uniq = 0
let has_skipped = 0
for token1 in reverse(path)
if !token1['duplicated'] && len(buf_name) > 1
call insert(buf_name, s:skip_symbol)
let has_skipped = 0
break
endif
if has_uniq == 1
call insert(buf_name, s:skip_symbol)
let has_skipped = 0
break
endif
if token1['uniq'] == 0 && token1['single'] == 1
let has_skipped = 1
else
if has_skipped == 1
call insert(buf_name, s:skip_symbol)
let has_skipped = 0
endif
call insert(buf_name, token1['token'])
endif
if token1['uniq'] == 1
let has_uniq = 1
endif
endfor
if has_skipped == 1
call insert(buf_name, s:skip_symbol)
endif
return airline#extensions#tabline#default#wrap_name(a:bufnr, join(buf_name, '/'))
else
return airline#extensions#tabline#default#format(a:bufnr, a:buffers)
endif
endfunction