From: svoop@... Date: 2019-04-25T13:05:44+00:00 Subject: [ruby-core:92407] [Ruby trunk Feature#12698] Method to delete a substring by regex match Issue #12698 has been updated by svoop (Sven Schwyn). The suggestion by @knu is pretty cool if you think about it: Since both `sub` and `gsub` exist, the uncertainty whether only one or all occurrences are deleted is gone. Also, with this in place, `delete` could be deprecated IMO (and removed on Ruby 3 which will most likely break existing code in other places as well). ---------------------------------------- Feature #12698: Method to delete a substring by regex match https://bugs.ruby-lang.org/issues/12698#change-77765 * Author: sawa (Tsuyoshi Sawada) * Status: Feedback * Priority: Normal * Assignee: * Target version: ---------------------------------------- There is frequent need to delete a substring from a string. There already are methods `String#delete` and `String#delete!`, but their feature is a little bit different from the use cases that I am mentioning here. I request methods that take a string or a regexp as an argument, and delete the matches from the receiver string. I am not sure of the method name, and I will use the term `remove` here. It can be named in some other better way. I request all combinations of global vs. local, and non-destructive vs. destructive. The expected feature is something like the following. First, the non-destructive ones: ```ruby "abcabc".remove("c") # => "ababc" "abcabc".remove(/\zc/) # => "abcab" "abcabc".gremove("c") # => "abab" "abcabc".gremove(/c/) # => "abab" ``` Then, the destructive ones: ```ruby s = "abcabc" s.remove!("c") # => "ababc" s # => "ababc" s = "abcabc" s.gremove!("d") # => nil s # => "abcabc" ``` Using this, cases like https://bugs.ruby-lang.org/issues/12694 would be just special cases. They can be handled like this: ```ruby "abcdef".remove(/\Aabc/) # => "def" -- https://bugs.ruby-lang.org/ Unsubscribe: