vim: add gaybuild syntax file

This is sort of half-finished and probably full
of bugs, but it works for the most part.
At least it's nicer to look at than blank text.

vim/syntax/gaybuild.vim

@@ -0,0 +1,63 @@
+" Vim syntax file
+" Language: gaybuild
+" Maintainer: anna <owo@fef.moe>
+" Latest Revision: 29 August 2022
+
+if exists('b:current_syntax')
+    finish
+endif
+
+syn match   gaybuildLink        contained '\vhttps?\:\/\/([a-zA-Z0-9][a-zA-Z0-9\-]*\.)+[a-zA-Z0-9\-]+\.?(:[1-9][0-9]*)?(\/[^/!"#? \t]*)*(\?[a-zA-T0-9_]+(\=[^/!"#? \t]*))?(#[^/!"#?\. \t]*)?'
+hi def link gaybuildLink        Underlined
+syn keyword gaybuildTodo        contained TODO FIXME XXX NOTE WARNING ATTENTION
+hi def link gaybuildTodo        Todo
+syn match gaybuildComment       '#.*$' contains=gaybuildTodo,gaybuildLink
+hi def link gaybuildComment     Comment
+
+syn match gaybuildStringEsc     contained '\\.'
+hi def link gaybuildStringEsc   SpecialChar
+syn region gaybuildString       start='"' skip=/\\./ end='"' contains=gaybuildStringEsc
+hi def link gaybuildString      String
+
+syn match   gaybuildIdent       '[a-zA-Z_][a-zA-Z0-9_]*'
+hi def link gaybuildIdent       Identifier
+
+syn match   gaybuildFnName      '[a-zA-Z_][a-zA-Z0-9_]*('he=e-1,me=e-1
+hi def link gaybuildFnName      Function
+
+syn match   gaybuildOperator    '\v[=+\-*/]\=?'
+syn match   gaybuildOperator    '\v\<\<?\=?'
+syn match   gaybuildOperator    '\v\>\>?\=?'
+syn match   gaybuildOperator    '\v\|[|\=]?'
+syn match   gaybuildOperator    '\v\&[&\=]?'
+syn match   gaybuildOperator    '\v\^\=?'
+hi def link gaybuildOperator    Operator
+
+syn match   gaybuildNumberErr   '0[0-9]+'
+hi def link gaybuildNumberErr   Error
+
+syn match   gaybuildNumber      '\v0[^\0-9]|$'
+syn match   gaybuildNumber      '0x[0-9a-fA-F]+'
+syn match   gaybuildNumber      '0o[0-7]+'
+syn match   gaybuildNumber      '0b[01]+'
+syn match   gaybuildNumber      '[1-9][0-9]*'
+hi def link gaybuildNumber      Number
+
+syn keyword gaybuildLoopKeyword for while
+hi def link gaybuildLoopKeyword Repeat
+
+syn keyword gaybuildCondKeyword if else
+hi def link gaybuildCondKeyword Conditional
+
+syn keyword gaybuildKeyword break depend fn include return set source target type var
+hi def link gaybuildKeyword Statement
+
+syn keyword gaybuildBool        true false
+hi def link gaybuildBool        Boolean
+
+syn region  gaybuildParens      start='(' end=')' fold transparent
+syn region  gaybuildBlock       start='{' end='}' fold transparent
+
+let b:current_syntax = 'gaybuild'
+
+" vim: set et sw=4 sts=4 ts=8: