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author | Tom Ryder <tom@sanctum.geek.nz> | 2017-11-04 20:16:43 +1300 |
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committer | Tom Ryder <tom@sanctum.geek.nz> | 2017-11-04 20:19:53 +1300 |
commit | 79d6eef63ff4984fa3f8631aec6da26fa19a6f34 (patch) | |
tree | fbdd211ef98f26a03553134c29d46b72043f6367 /vim/plugin/big_file_options.vim | |
parent | Merge branch 'release/v0.7.0' into develop (diff) | |
download | dotfiles-79d6eef63ff4984fa3f8631aec6da26fa19a6f34.tar.gz dotfiles-79d6eef63ff4984fa3f8631aec6da26fa19a6f34.zip |
Adjust plugin code layout a lot
Including renaming big_file.vim and accompanying functions yet again, to
big_file_options.vim.
Trying to keep complex autocmd and mapping definitions on long lines
broken up semantically; definition and options on one line, patterns or
mapping key on the next, and the command to run on the last.
Also trying to make sure that <silent>, <buffer>, and <unique> are
applied in the correct places, and that all mapping commands are using
the :<C-U> idiom for the command prefix.
Diffstat (limited to 'vim/plugin/big_file_options.vim')
-rw-r--r-- | vim/plugin/big_file_options.vim | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/vim/plugin/big_file_options.vim b/vim/plugin/big_file_options.vim new file mode 100644 index 00000000..fd686fd8 --- /dev/null +++ b/vim/plugin/big_file_options.vim @@ -0,0 +1,62 @@ +" +" big_file_options.vim: When opening a large file, take some measures to keep +" things loading quickly. +" +" Author: Tom Ryder <tom@sanctum.geek.nz> +" License: Same as Vim itself +" +if has('eval') && has('autocmd') + + " Default threshold is 10 MiB + if !exists('g:big_file_size') + let g:big_file_size = 10 * 1024 * 1024 + endif + + " Default to leaving syntax highlighting off + if !exists('g:big_file_syntax') + let g:big_file_syntax = 0 + endif + + " Cut 'synmaxcol' down to this or smaller for big files + if !exists('g:big_file_synmaxcol') + let g:big_file_synmaxcol = 256 + endif + + " Declare function for turning off slow options + function! s:BigFileOptions() + + " Don't do anything if the file is under the threshold + if getfsize(expand('<afile>')) <= g:big_file_size + return + endif + + " Turn off backups, swap files, and undo files + setlocal nobackup + setlocal nowritebackup + setlocal noswapfile + if has('persistent_undo') + setlocal noundofile + endif + + " Limit the number of columns of syntax highlighting + if exists('&synmaxcol') + \ && &synmaxcol > g:big_file_synmaxcol + execute 'setlocal synmaxcol=' . g:big_file_synmaxcol + endif + + " Disable syntax highlighting if configured to do so + if !g:big_file_syntax + setlocal syntax=OFF + endif + + endfunction + + " Define autocmd for calling to check filesize + augroup big_file_options_bufreadpre + autocmd! + autocmd BufReadPre + \ * + \ call s:BigFileOptions() + augroup end + +endif |