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Use strdisplaywidth where available

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In vim 7.3, the strdisplaywidth function was added to give an accurate
count of the number of screen columns that will be taken up by a given
string.  Tabular was written before vim 7.3, and was implementing this
functionality itself (at least for tabs; it wasn't trying to handle
doublewide characters).

This changeset allows us to take advantage of strdisplaywidth where it
exists.
This commit is contained in:
Matt Wozniski 2012-10-21 22:37:02 -04:00
parent d3acca35fd
commit 7f6f1723a2
1 changed files with 22 additions and 14 deletions
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12
autoload/tabular.vim
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@ -46,7 +46,14 @@ set cpo&vim
" Return the number of bytes in a string after expanding tabs to spaces. {{{2
" This expansion is done based on the current value of 'tabstop'
function! s:Strlen(string)
if exists('*strdisplaywidth')
" Needs vim 7.3
let s:Strlen = function("strdisplaywidth")
else
function! s:Strlen(string)
" Implement the tab handling part of strdisplaywidth for vim 7.2 and
" earlier - not much that can be done about handling doublewidth
" characters.
let rv = 0
let i = 0
@ -61,7 +68,8 @@ function! s:Strlen(string)
endfor
return rv
endfunction
endfunction
endif
" Align a string within a field {{{2
" These functions do not trim leading and trailing spaces.