How can I make Syntastic load a different checker based on existance of files in root?

Question

At work we use a different syntax checker than I do when working on open source. Is there a way to have Syntastic specify a default checker, and change checkers if an rc file is found at the project root?

Example: if .eslintrc is found use eslint. If no .eslintrc is found, use standard.

Thanks!

edit: also opened an issue on scrooloose/syntastic.

lcd047 · Accepted Answer · 2015-02-18T16:35:33.853

17

Yes, you can do something like this:

autocmd FileType javascript let b:syntastic_checkers = findfile('.eslintrc', '.;') != '' ? ['eslint'] : ['standard']

Edit: Upon request, explanation of how this works:

autocmd FileType javascript - run the following stuff every time the filetype of a buffer is set to javascript (that is, normally once per buffer)
b:syntastic_checkers list of checkers enabled for the current buffer, overriding g:syntastic_javascript_checkers
findfile('.eslintrc', ...) - find a file named .eslintrc ...
.; - ... in the current directory and upwards
!= '' ? - if found...
['eslint'] - ... set b:syntastic_checkers to ['eslint']
: ['standard'] - ... otherwise set it to ['standard']

Magic, I tell ya.

edited Feb 18 '15 at 16:35

answered Feb 18 '15 at 07:10

lcd047

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Could you please add an explanation as to how this command works? – EvergreenTree Feb 18 '15 at 12:51
@lcd047 could you elaborate on how to make it use a local binary instead of `standard`? – hiddensunset4 May 28 '15 at 10:19
@dcousens: I never said you could make it use an arbitrary local binary instead of `standard`. – lcd047 May 28 '15 at 10:27
@lcd047 sure. So I guess that means you're not aware of a way to make it do that? – hiddensunset4 Jun 05 '15 at 06:58
@dcousens If you have a question, please ask it in a separate post. If you feel that your question doesn't belong on SO, syntastic issue tracker is [this way](https://github.com/scrooloose/syntastic/issues). – lcd047 Jun 05 '15 at 14:21

score 1 · Answer 2 · answered Jun 13 '16 at 06:12

Another simple option, which has wider application than just this question, is to add the following to your .vimrc file:

if findfile('.lvimrc','.') != ''
    source .lvimrc
endif

Then in the directory where you want some different behavior, just add a '.lvimrc' file with the syntastic option that you want for that directory.

How can I make Syntastic load a different checker based on existance of files in root?

2 Answers2