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authorTom Ryder <tom@sanctum.geek.nz>2017-11-04 17:33:06 +1300
committerTom Ryder <tom@sanctum.geek.nz>2017-11-04 17:33:06 +1300
commit85b05425ed3be65439fefa5f0074d3d7f18217f9 (patch)
tree6785858b291dcc6bbaddd5b363b28261b37a6401 /vim/autoload
parentc88cb8805f683eb6d886743f3e147a3ab0fbee91 (diff)
downloaddotfiles-85b05425ed3be65439fefa5f0074d3d7f18217f9.tar.gz
dotfiles-85b05425ed3be65439fefa5f0074d3d7f18217f9.zip
Don't suggest mappings in Vim plugin comments
Pretty useless, really.
Diffstat (limited to 'vim/autoload')
-rw-r--r--vim/autoload/flag_toggle.vim54
1 files changed, 54 insertions, 0 deletions
diff --git a/vim/autoload/flag_toggle.vim b/vim/autoload/flag_toggle.vim
new file mode 100644
index 00000000..10739149
--- /dev/null
+++ b/vim/autoload/flag_toggle.vim
@@ -0,0 +1,54 @@
+"
+" option_flags.vim: Provide functions to toggle flags in single-char grouped
+" options like 'formatoptions', 'shortmess', 'complete' etc.
+"
+" This will fail hilariously if you try to set e.g. 'switchbuf' with it!
+"
+" Author: Tom Ryder <tom@sanctum.geek.nz>
+" License: Same as Vim itself
+"
+if has('eval')
+
+ " Public wrapper function to toggle a flag with 'set'
+ function! option_flags#toggle(option, flag)
+ call s:toggle(a:option, a:flag, 0)
+ endfunction
+
+ " Public wrapper function to toggle a flag with 'setlocal'
+ function! option_flags#toggle_local(option, flag)
+ call s:toggle(a:option, a:flag, 1)
+ endfunction
+
+ " Internal function to do the toggling
+ function! s:toggle(option, flag, local)
+
+ " Check for weird options, we don't want to eval() anything funny
+ if a:option =~# '[^a-z]'
+ echoerr 'Illegal option name'
+ return
+ endif
+
+ " Weird flags, too; should be a single inoffensive char
+ if a:flag !~# '^[a-z0-9.]$'
+ echoerr 'Illegal flag'
+ return
+ endif
+
+ " Choose which set command to use
+ if a:local
+ let l:set = 'setlocal '
+ else
+ let l:set = 'set '
+ endif
+
+ " Use eval() to assign -= or += to l:op for the option toggle
+ " (I couldn't get {curly braces} indirection to work)
+ let l:op = ''
+ execute 'let l:op = &'.a:option.' =~# a:flag ? "-=" : "+="'
+
+ " Use eval() to perform the option toggle and then print the value
+ execute l:set . ' ' . a:option . l:op . a:flag . ' ' . a:option . '?'
+
+ endfunction
+
+endif