Vi lisp word separators

[ilya-fiveisky]

Motivation.

For word

In Lisp, characters /, ., :, and - syntactically can be part of a symbol or package name but semantically they are separators because typical symbol name is a phrase consisting of several words separated by - like some-symbol-name and package name looks like some-package/some-subpackage.
It would be natural to expect vi motion commands to take this into account.

For WORD

In Lisp code like (qwer [a]sdf-uiop) or "qwer [a]sdf", where [] is a cursor position, nobody would expect commands like DE to create unbalanced parentheses or double quotes.

Implementation

Implemented via specializing iskeyword and isseparator options initialization on option names and syntax tables. For Lisp syntax table characters /, ., :, and - are removed from iskeyword option and characters (, ) and " are added to isseparator option.

[fukamachi]

LGTM, thanks!