Lisp language crashes browser

[simonlast]

Input string:

? print sum 10 difference 7 3
14
? print "sum
sum
? print [hello world]
hello world
? show [hello world]
[hello world]
? show sentence 1 [1 2]
[1 1 2]
? show list [1 2 3] 4
[[1 2 3] 4]
? print first [1 2 3]
1
? print butfirst [1 2 3]
2 3
? run [print sum 1 2]
3

Crashes on regex: /"(?:[^"\\]*|\\.)*"/g

[RunDevelopment]

Thanks for reporting!