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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.
This commit is contained in:
Sergey Alexandrov 2014-03-10 12:13:18 +01:00
parent 7857cc2345
commit 4a76132cbe
1 changed files with 1 additions and 0 deletions
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autoload/airline/extensions/tabline/unique_tail_improved.vim
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@ -19,6 +19,7 @@ function! airline#extensions#tabline#unique_tail_improved#format(bufnr, buffers)
let tokens = reverse(split(substitute(fnamemodify(name, ':p:.:h'), '\\', '/', 'g'), '/')) let tokens = reverse(split(substitute(fnamemodify(name, ':p:.:h'), '\\', '/', 'g'), '/'))
let token_index = 0 let token_index = 0
for token in tokens for token in tokens
if token == '' | continue | endif
if token == '.' | break | endif if token == '.' | break | endif
if !has_key(path_tokens, token_index) if !has_key(path_tokens, token_index)
let path_tokens[token_index] = {} let path_tokens[token_index] = {}