From: nobu@... Date: 2018-01-30T06:00:18+00:00 Subject: [ruby-core:85245] [Ruby trunk Bug#14418] ruby 2.5 slow regexp execution Issue #14418 has been updated by nobu (Nobuyoshi Nakada). Description updated FYI, you can avoid it by using `.` instead of `[\S\s]`. ---------------------------------------- Bug #14418: ruby 2.5 slow regexp execution https://bugs.ruby-lang.org/issues/14418#change-70001 * Author: jakub.wozny (Kuba W) * Status: Open * Priority: Normal * Assignee: * Target version: * ruby -v: 2.5 * Backport: 2.3: UNKNOWN, 2.4: UNKNOWN, 2.5: UNKNOWN ---------------------------------------- I have simple regexp that performing very slow. ~~~ ruby "fu��ball "*20 =~ /^([\S\s]{1000})/i ~~~ It works fast if I remove `/i` flag. I figured out that is also depends on string length or on quantifier value (in this case it is `{1000}`). When you remove `��` form the string it also works fast. I tested on 2.3.1, 2.4.3 and 2.5.0. I'm not sure it is a bug or it just works that way. -- https://bugs.ruby-lang.org/ Unsubscribe: