Make highlight customizable and U+3000 character support

[tyru]

Hi. Thanks for developing a nice plugin! I found highlight is not customizable, and I needed 'IDEOGRAPHIC SPACE' character (U+3000) support. The character is used in CJK locale.

• 170ea495ce53b95599193608919c4618e0094b46 ShouldMatchWhitespace() should be script-local :)
• 8231ac7cdb86e867d7bdf6050d177fc4fc3c1a6e Make highlight customizable in .vimrc
  • My .vimrc config is:

highlight ExtraWhitespace cterm=underline gui=underline ctermfg=4 guifg=Cyan
autocmd ColorScheme * highlight ExtraWhitespace cterm=underline gui=underline ctermfg=4 guifg=Cyan

• 9a4742777777f686f692a66017196cb3a952b7a1 Support 'IDEOGRAPHIC SPACE' character (U+3000)
  • See http://www.fileformat.info/info/unicode/char/3000/index.htm for the details

[tyru]

And I found the difference of ExtraWhitespace's highlight. I don't know which one is correct. So I didn't change it.

• Default: ctermbg=darkred guibg=#382424
• On ColorScheme event: ctermbg=red guibg=red

[bronson]

Sorry for the delay @hugomg and @tyru, been buried. It'll take another week or two but I'm looking forward to trying these PRs out.

It would help if anyone could give either of the open PRs a quick review.

[tyru]

Okay :)

[bronson]

Week or two? Arg, more like a month or two...

@tyru I like these changes, glad you made them separate commits.

Could you rebase against master? LGTM.

[tyru]

Now I rebased against master and git push --force. Please check.

NOTE: I did small change to 5753ff3f3049bfd3e3b8567bb570158d6f2da648. Before: \(\%u3000\|\s\)\+$ After: [\u3000[:space:]]\+$

[bronson]

Looks great, thanks!!