From: sonots@... Date: 2016-09-07T07:51:06+00:00 Subject: [ruby-core:77193] [Ruby trunk Feature#12694] Want a String method to remove heading substr Issue #12694 has been updated by Naotoshi Seo. Naotoshi Seo wrote: > PHP has ltrim and rtrim (which is an alias of chop) http://php.net/manual/en/function.ltrim.php. > It seems String#ltrim is fine for me. How do you think? Sorry, it was the one accepting a character list, too.... `String#ltrim` was bad. ``` ltrim('foaofe', 'foa'); #=> 'e' ``` ---------------------------------------- Feature #12694: Want a String method to remove heading substr https://bugs.ruby-lang.org/issues/12694#change-60408 * Author: Naotoshi Seo * Status: Open * Priority: Normal * Assignee: ---------------------------------------- I often write codes like: ```ruby str = 'abcdef' substr = 'abc' str[substr.size..-1] if str.start_with?(substr) #=> 'def' # or str.sub(/^#{Regexp.escape(substr)}/, '') #=> 'def' ``` I want a short hand which is something like: ```ruby str = 'abcdef' substr = 'abc' str.lstrip(substr) #=> 'def' ``` Having similar argument for `String#rstrip` would be nice for symmetry although we already have `String#chomp(substr)` My frequent use-case is coming from fluentd. We have `remove_tag_prefix` option to remove a heading substring from a tag. We currently using `String#sub` with a regular expression, but I feel regular expression matching is too much just to remove a heading substring. https://github.com/fluent/fluentd/blob/75005f18d48ed3d416890413fa5f83982b264c71/lib/fluent/compat/handle_tag_name_mixin.rb#L45 -- https://bugs.ruby-lang.org/ Unsubscribe: