From: zimbatm@... Date: 2015-03-04T10:34:34+00:00 Subject: [ruby-core:68409] [Ruby trunk - Feature #10927] [PATCH] Add default empty string to string replacements Issue #10927 has been updated by zimba tm. Alright but a change doesn't necessarily need to be substantial to improve developer happiness. It seems like my little hack has two aspects to it that I would like to address separately. `"foo".gsub("o")` currently doesn't do any substitution. In my point of view it's a hack to get an Enumerator instead of an Array (which #scan returns) and should therefor be deprecated to leave room for other usages (like the one I proposed). I am happy to propose a patch that adds a warning on that usage. There's a lot of times where I just want to remove some string or regexp match from a string and just being able to `some_string.gsub(pattern)` would make me happy. I don't think it's a too big change if backward-compatibility is not broken. That will have to wait until the first point is resolved. ---------------------------------------- Feature #10927: [PATCH] Add default empty string to string replacements https://bugs.ruby-lang.org/issues/10927#change-51758 * Author: zimba tm * Status: Open * Priority: Normal * Assignee: ---------------------------------------- Hi ruby devs ! A common case for string substitution is to just remove the found items. This patch changes the `String#[g]sub[!]` methods to allow that. Old usages: "foo".sub("o", "") #=> "fo" "foo".gsub("o", "") #=> "f" New usages: "foo".sub("o") #=> "fo" "foo".gsub("o") #=> "f" Applies to the bang versions as well. This commit changes the return values of String#gsub! call with a single argument and no block from an Enumerator to a String. The previous usage would return an Enumerator containing each match, which is not a string substitution. A suitable replacement should nonetheless be found before merging this commit. Before: "foo".gsub("o") #=> # Replacement: ??? ---Files-------------------------------- 0001-Add-a-default-empty-string-to-string-replacements.patch (2.2 KB) -- https://bugs.ruby-lang.org/