From: nobu@... Date: 2017-01-17T06:44:53+00:00 Subject: [ruby-core:79104] [Ruby trunk Bug#13134] Rational() inconsistency Issue #13134 has been reported by Nobuyoshi Nakada. ---------------------------------------- Bug #13134: Rational() inconsistency https://bugs.ruby-lang.org/issues/13134 * Author: Nobuyoshi Nakada * Status: Open * Priority: Normal * Assignee: * Target version: * ruby -v: * Backport: 2.2: UNKNOWN, 2.3: UNKNOWN, 2.4: UNKNOWN ---------------------------------------- `Rational()` parses a float, an integer divided by an integer, and a float divided by an integer. ```ruby Rational("3.1") #=> (31/10) Rational("3/2") #=> (3/2) Rational("3.1/2") #=> (31/20) ``` But a float is not allowed as a denominator. ```ruby Rational("3.1/2.0") #=> ArgumentError ``` I'd expect the last also passes and results in `(31/20)`, or the third also raises an `ArgumentError` A patch to let all pass. https://github.com/ruby/ruby/compare/trunk...nobu:parse_rat -- https://bugs.ruby-lang.org/ Unsubscribe: