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move definition of String#unicode_normalize to C to make sure it is documented

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* lib/unicode_normalize.rb: Remove definition of String#unicode_normalize
  (including documentation)
* string.c: Define String#unicode_normalize in rb_str_unicode_normalize in C,
  (including documentation)
* lib/unicode_normalize/normalize.rb: Remove (re)definition of
  String#unicode_normalize to avoid warnings (when $VERBOSE==true) and
  problems when String is frozen

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58550 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
duerst 2017-05-03 12:18:37 +00:00
parent 8b51a725db
commit 5fee67c9ba
3 changed files with 48 additions and 30 deletions
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26
lib/unicode_normalize.rb
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@ -8,32 +8,6 @@
#++
class String
# :call-seq:
# str.unicode_normalize(form=:nfc)
#
# Unicode Normalization---Returns a normalized form of +str+,
# using Unicode normalizations NFC, NFD, NFKC, or NFKD.
# The normalization form used is determined by +form+, which can
# be any of the four values +:nfc+, +:nfd+, +:nfkc+, or +:nfkd+.
# The default is +:nfc+.
#
# If the string is not in a Unicode Encoding, then an Exception is raised.
# In this context, 'Unicode Encoding' means any of UTF-8, UTF-16BE/LE,
# and UTF-32BE/LE, as well as GB18030, UCS_2BE, and UCS_4BE.
# Anything other than UTF-8 is implemented by converting to UTF-8,
# which makes it slower than UTF-8.
#
# "a\u0300".unicode_normalize #=> 'à' (same as "\u00E0")
# "a\u0300".unicode_normalize(:nfc) #=> 'à' (same as "\u00E0")
# "\u00E0".unicode_normalize(:nfd) #=> 'à' (same as "a\u0300")
# "\xE0".force_encoding('ISO-8859-1').unicode_normalize(:nfd)
# #=> Encoding::CompatibilityError raised
#
def unicode_normalize(form = :nfc)
require 'unicode_normalize/normalize.rb'
unicode_normalize form # no recursion, because redefined in unicode_normalize/normalize.rb
end
# :call-seq:
# str.unicode_normalize!(form=:nfc)
#