Redmine

Currently, Redmine requires at least 2 characters length for search keywords. It is not a problem for languages such as English and French.

But for languages such as Japanese and Chinese, the limitation imposes inconvenience for users because there are some words which consist of only a single character. Some examples as follows:

• 金 = money in Japanese and Chinese
• 水 = water in Japanese and Chinese
• 猪 = a wild boar in Japanese, a pig in Chinese
• 陈 = a common family name for Chinese people

To allow such single character search keywords, I suggest the following patch. It accepts single multibyte-character keywords while keeping the current limitation for keywords with ASCII characters.

diff --git a/lib/redmine/search.rb b/lib/redmine/search.rb
index 674022151..d4c0b9b20 100644
--- a/lib/redmine/search.rb
+++ b/lib/redmine/search.rb
@@ -59,8 +59,8 @@ module Redmine
         # extract tokens from the question
         # eg. hello "bye bye" => ["hello", "bye bye"]
         @tokens = @question.scan(%r{((\s|^)"[^"]+"(\s|$)|\S+)}).collect {|m| m.first.gsub(%r{(^\s*"\s*|\s*"\s*$)}, '')}
-        # tokens must be at least 2 characters long
-        @tokens = @tokens.uniq.select {|w| w.length > 1 }
+        # tokens must be at least 2 characters long in ASCII
+        @tokens = @tokens.uniq.select {|w| w.bytesize > 1 }
         # no more than 5 tokens to search for
         @tokens.slice! 5..-1
       end