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Diffstat (limited to 'vim/plugin/undoskip.vim')
-rw-r--r-- | vim/plugin/undoskip.vim | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/vim/plugin/undoskip.vim b/vim/plugin/undoskip.vim new file mode 100644 index 00000000..80609433 --- /dev/null +++ b/vim/plugin/undoskip.vim @@ -0,0 +1,46 @@ +" +" undoskip.vim: Don't save undo history for temporary or secure files. +" +" Author: Tom Ryder <tom@sanctum.geek.nz> +" License: Same as Vim itself +" +if exists('loaded_undoskip') || &compatible || v:version < 700 + finish +endif +let loaded_undoskip = 1 + +" Set the paths to test; can be changed by the user +let undoskip#patterns = ['^/dev/shm/.', '^/tmp/.', '^/var/tmp/.'] + +" Internal function returns a local value for 'undofile' +function s:CheckUndoSkip() abort + + " If this isn't a normal buffer, don't save undo data + if &buftype !=# '' + return 0 + endif + + " Get the path from the buffer name; if that path matches any of the + " patterns, don't save undo data + let path = bufname('%') + for pattern in g:undoskip#patterns + if path =~# pattern + return 0 + endif + endfor + + " Otherwise, we'll use whatever the global setting is + return &g:undofile + +endfunction + +" Command interface into the private function's value, does the actual set +command -nargs=0 CheckUndoSkip + \ let &l:undofile = s:CheckUndoSkip() + +" Check the path on every buffer rename, create, or read +augroup undoskip + autocmd! + autocmd BufAdd,BufNewFile,BufRead * + \ CheckUndoSkip +augroup END |