Halves syntime benchmark:
 TOTAL COUNT
BEFORE: 0.116939 49694
AFTER: 0.052234 27016

These are valid symbol characters.

$ syntime clj/src/vim_clojure_static/generate.clj
Before:
 TOTAL COUNT MATCH SLOWEST AVERAGE NAME PATTERN
 0.031679 2003 1906 0.000092 0.000016 clojureSymbol \v%([a-zA-Z!$&*_+=|<.>?-]|[^\x00-\x7F])+%(:?%([a-zA-Z0-9!#$%&*_+=|'<.>/?-]|[^\x00-\x7F]))*[#:]@<!
 0.051484 27016
After:
 TOTAL COUNT MATCH SLOWEST AVERAGE NAME PATTERN
 0.010608 2003 1906 0.000030 0.000005 clojureSymbol \v%([a-zA-Z!$&*_+=|<.>?-]|[^\x00-\x7F])+%(:?%([a-zA-Z0-9!#$%&*_+=|'<.>/?-]|[^\x00-\x7F]))*[#:]@1<!
 0.030519 27016
$ curl -LO https://raw.githubusercontent.com/http-kit/http-kit/master/src/org/httpkit/client.clj
$ syntime client.clj
Before:
 TOTAL COUNT MATCH SLOWEST AVERAGE NAME PATTERN
 0.029451 2340 2293 0.000079 0.000013 clojureSymbol \v%([a-zA-Z!$&*_+=|<.>?-]|[^\x00-\x7F])+%(:?%([a-zA-Z0-9!#$%&*_+=|'<.>/?-]|[^\x00-\x7F]))*[#:]@<!
 0.046375 23668
After:
 TOTAL COUNT MATCH SLOWEST AVERAGE NAME PATTERN
 0.010855 2340 2293 0.000031 0.000005 clojureSymbol \v%([a-zA-Z!$&*_+=|<.>?-]|[^\x00-\x7F])+%(:?%([a-zA-Z0-9!#$%&*_+=|'<.>/?-]|[^\x00-\x7F]))*[#:]@1<!
 0.027972 23668
Thanks to Richard Hull (@rm-hull).

Reduces number syntax matching time by 65%