From: "mame (Yusuke Endoh)" Date: 2022-07-19T09:28:01+00:00 Subject: [ruby-core:109243] [Ruby master Bug#18909] ARGF.readlines reads more than current file Issue #18909 has been updated by mame (Yusuke Endoh). Is this what you want? ``` $ echo primo > a $ echo secundo >> a $ echo PRIMO > b $ ruby -i.bak -e 'until ARGF.closed?; x = ARGF.file.readlines; puts "#{ x.size } lines"; puts x; ARGF.skip; end' a b $ cat a 2 lines primo secundo $ cat b 1 lines PRIMO ``` TBH I don't recommend to use `-i` either ---------------------------------------- Bug #18909: ARGF.readlines reads more than current file https://bugs.ruby-lang.org/issues/18909#change-98377 * Author: JohanJosefsson (Johan Josefsson) * Status: Closed * Priority: Normal * ruby -v: ruby 2.3.1p112 (2016-04-26) [x86_64-linux-gnu] * Backport: 2.7: REQUIRED, 3.0: REQUIRED, 3.1: REQUIRED ---------------------------------------- The docuentation says that ARGF.readlines: *Reads ARGF's current file in its entirety* , but this is what happens: `$ cat fileA A $ cat fileB B $ ruby -e 'puts ARGF.readlines' fileA fileB A B` i.e. it reads both the current file and the next one (all files?). -- https://bugs.ruby-lang.org/ Unsubscribe: