From 9e67954dcfdc92f1087a03c0b1c61251d993e270 Mon Sep 17 00:00:00 2001 From: Ernie Miller Date: Fri, 18 Apr 2014 14:55:30 -0400 Subject: Fix inconsistent behavior from String#first/#last While calling String#first or String#last with zero or a Fixnum < the string's length returns a new string, a Fixnum >= the string's length returns the string itself. This inconsistency can lead to inadvertent mutation of a string. --- activesupport/lib/active_support/core_ext/string/access.rb | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'activesupport/lib/active_support/core_ext/string/access.rb') diff --git a/activesupport/lib/active_support/core_ext/string/access.rb b/activesupport/lib/active_support/core_ext/string/access.rb index 6018fd9641..ebd0dd3fc7 100644 --- a/activesupport/lib/active_support/core_ext/string/access.rb +++ b/activesupport/lib/active_support/core_ext/string/access.rb @@ -64,7 +64,7 @@ class String # Returns the first character. If a limit is supplied, returns a substring # from the beginning of the string until it reaches the limit value. If the - # given limit is greater than or equal to the string length, returns self. + # given limit is greater than or equal to the string length, returns a copy of self. # # str = "hello" # str.first # => "h" @@ -76,7 +76,7 @@ class String if limit == 0 '' elsif limit >= size - self + self.dup else to(limit - 1) end @@ -84,7 +84,7 @@ class String # Returns the last character of the string. If a limit is supplied, returns a substring # from the end of the string until it reaches the limit value (counting backwards). If - # the given limit is greater than or equal to the string length, returns self. + # the given limit is greater than or equal to the string length, returns a copy of self. # # str = "hello" # str.last # => "o" @@ -96,7 +96,7 @@ class String if limit == 0 '' elsif limit >= size - self + self.dup else from(-limit) end -- cgit v1.2.3