dupped or frozen, because freezing it causes #concat method failure,
and unnecessary to dup without freezing. a patch from Aaron
Patterson at [ruby-core:25145].
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@24679 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
external local variable in the block parameters. [ruby-dev:32251]
* test/strscan/test_stringscanner.rb: avoid $KCODE, and use
String#force_encoding(). [ruby-dev:32251]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13922 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* ext/strscan/strscan.c: new method StringScanner#beginning_of_line? (alias #bol?)
* ext/strscan/strscan.c: new method StringScanner#concat and #<<.
* ext/strscan/strscan.c: StringScanner#new(str) does not duplicate nor freeze STR (allow destructive modification).
* test/strscan/test_stringscanner.rb: test new methods above.
* test/strscan/test_stringscanner.rb: test destructive string modification.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@5201 b2dd03c8-39d4-4d8f-98ff-823fe69b080e