meow-thing-register support keyword pair-regexp & add new thing code-block

[jixiuf]

meow-thing-register support keyword pair-regexp

pair-regexp works similarly to pair, but while pair uses ordinary strings,
pair-regexp utilizes regular expressions.

an example

    (meow-thing-register 'code-block
                         '(pair-regexp ("{[\n\t ]*")  ("[\n\t ]*}") )
                         '(pair ("{") ("}")))

inner thing of code-block
look like:

instead of

this is usable when I want to call meow-grab on all fields of a struct.

[DogLooksGood]

pair-regexp looks good to me.

But code-block doesn't work in many languages. I remember in kak, it uses a concept called indentation? So basically select the statements starts with same indentation, it's not limited to C-like languages.

[jixiuf]

pair-regexp looks good to me.

But code-block doesn't work in many languages. I remember in kak, it uses a concept called indentation? So basically select the statements starts with same indentation, it's not limited to C-like languages.

ok I removed the code-block