Re: syntax region end when either pattern occurs?

2015-06-30 9:09 GMT+03:00 Paul Isambert <zappathustra@free.fr>:
> Le lundi 29 juin 2015 à 19:05, Nikolay Pavlov a écrit:
>>
>>
>> 2015-06-29 18:52 GMT+03:00 Rick Dooling <rpdooling@gmail.com>:
>> > I am trying to syntax highlight yaml blocks in Markdown files.
>> >
>> > Right now, I can get it so it handles either blocks that look like this:
>> >
>> > ---
>> > author: me
>> > document: Help
>> > ---
>> >
>> > or
>> >
>> > ---
>> > author: me
>> > document: Help
>> > ...
>> >
>> > But not both. Is there a way to do both?
>> >
>> > I tried end=\(/^---$/\|/^\.\.\.$\) but that didn't work
>>
>> end=\(/^---$/\|/^\.\.\.$\)
>>
>> Syntax for such items is end={separator}{regex}{separator}[offsets].
>> In your example separator is `\` which really results in something
>> weird because `\` is *always* an escape character. This has no chances
>> to work, you need to use `end=/\v^%(\.{3}|\-{3})$/`.
>
> You can move "{3}" outside the group:
>
> end=/\v^%(\.|\-){3}$/
>
> and since chances are pretty low that you'll have lines mixing "-" and
> ".", you can use the more relaxed:
>
> end=/\v^[.-]{3}$/

These are not different. I did not move `{3}` out of the group because
it will *in both cases you presented* match something like `.-.`.

>
> Best,
> Paul
>
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