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A couple of things worth mentioning here:
- "{" is a metacharacter, should be escaped
if it is meant to match a "{". The code
worked, though, because the regexp engine
is tolerant to this, but issued warnings.
- gsub accepts a string as first argument.
That's the best idiom to use when your
pattern has no metacharacters, since gsub
interprets the string as an exact substring
to look for, rather than a regexp. The
benefit is that your pattern is crystal
clear and needs no backslashes.