From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Original-To: poffice@blade.nagaokaut.ac.jp Delivered-To: poffice@blade.nagaokaut.ac.jp Received: from kankan.nagaokaut.ac.jp (kankan.nagaokaut.ac.jp [133.44.2.24]) by blade.nagaokaut.ac.jp (Postfix) with ESMTP id 0E9911AE022E for ; Wed, 7 Sep 2016 15:18:01 +0900 (JST) Received: from voscc.nagaokaut.ac.jp (voscc.nagaokaut.ac.jp [133.44.1.100]) by kankan.nagaokaut.ac.jp (Postfix) with ESMTP id 026F6B5D9BC for ; Wed, 7 Sep 2016 15:50:35 +0900 (JST) Received: from neon.ruby-lang.org (neon.ruby-lang.org [221.186.184.75]) by voscc.nagaokaut.ac.jp (Postfix) with ESMTP id 7A3E118CC80A for ; Wed, 7 Sep 2016 15:50:35 +0900 (JST) Received: from neon.ruby-lang.org (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id 923711204C9; Wed, 7 Sep 2016 15:50:35 +0900 (JST) X-Original-To: ruby-core@ruby-lang.org Delivered-To: ruby-core@ruby-lang.org Received: from o10.shared.sendgrid.net (o10.shared.sendgrid.net [173.193.132.135]) by neon.ruby-lang.org (Postfix) with ESMTPS id 0E55412049A for ; Wed, 7 Sep 2016 15:50:31 +0900 (JST) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sendgrid.me; h=from:to:references:subject:mime-version:content-type:content-transfer-encoding:list-id; s=smtpapi; bh=3Juvfyffz1rXNgOuJhDfO/D2KLE=; b=IhbTB2r+e2O5G7pvo0 howrwew91FzDI7bkcjR7nalBUGuV3EZujKGK96HjCM0KPCJSaI5NphkjujTFEu4D /cQj1I3+zKtXfreOlG7fi2tpJ8+vanyhRNHrUhBCjz6Eg5tnkS0AwnyYSkogtw5S Ni/SLtLluU/7VYwliotYYQYaI= Received: by filter0985p1mdw1.sendgrid.net with SMTP id filter0985p1mdw1.29218.57CFB8B514 2016-09-07 06:50:29.571695263 +0000 UTC Received: from herokuapp.com (ec2-54-204-80-184.compute-1.amazonaws.com [54.204.80.184]) by ismtpd0005p1iad1.sendgrid.net (SG) with ESMTP id h5GkkzB3SsGpwkMq05Xgng for ; Wed, 07 Sep 2016 06:50:29.556 +0000 (UTC) Date: Wed, 07 Sep 2016 06:50:29 +0000 From: sonots@gmail.com To: ruby-core@ruby-lang.org Message-ID: References: Mime-Version: 1.0 X-Redmine-MailingListIntegration-Message-Ids: 51973 X-Redmine-Project: ruby-trunk X-Redmine-Issue-Id: 12694 X-Redmine-Issue-Author: sonots X-Redmine-Sender: sonots X-Mailer: Redmine X-Redmine-Host: bugs.ruby-lang.org X-Redmine-Site: Ruby Issue Tracking System X-Auto-Response-Suppress: All Auto-Submitted: auto-generated X-SG-EID: ync6xU2WACa70kv/Ymy4QrNMhiuLXJG8OTL2vJD1yS56uHBNVRiaxQQ0JcpGzinUXkmumDrjncDi3a h7MWmmB+ky4Mw7AmY/3BwsKPVO7c+XGuhxuuWzQsxGwe1dd7Rz1l77nsgEyPa7+5GzR1HB53pq/1ug QiztpTk+NNLHMooQwnrf3Nfe2arK5ClnVdxk X-ML-Name: ruby-core X-Mail-Count: 77179 Subject: [ruby-core:77179] [Ruby trunk Feature#12694] Want a String method to remove heading substr X-BeenThere: ruby-core@ruby-lang.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: Ruby developers List-Id: Ruby developers List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ruby-core-bounces@ruby-lang.org Sender: "ruby-core" Issue #12694 has been updated by Naotoshi Seo. Description updated ---------------------------------------- Feature #12694: Want a String method to remove heading substr https://bugs.ruby-lang.org/issues/12694#change-60393 * 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://bugs.ruby-lang.org/