Issue #21101 has been updated by nobu (Nobuyoshi Nakada). See https://bugs.ruby-lang.org/issues/18931. You can add `encoding: Encoding::ISO_8859_1` keyword argument to tell the expected encoding. ---------------------------------------- Bug #21101: Encoding::CompatibilityError when using String#strip https://bugs.ruby-lang.org/issues/21101#change-111708 * Author: jpeterburs (Jonas Peterburs) * Status: Open * ruby -v: 3.2.0 * Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN ---------------------------------------- When opening an ISO 8859-1 encoded file containing a German letter (e.g. ö), then parsing through each line and stripping whitespace using either `rstrip` or `strip` it raises an Error ( `lstrip` seams fine; I'd assume it skips stripping when there isn't any whitespace in front of the string). ``` ruby File.open('test.dat').each_line { |line| line.strip } # raises Encoding::CompatibilityError ``` I've tried this with multiple ruby versions. It was working as expected in these versions: - 2.7.8 - 3.0.0 - 3.0.7 - 3.1.0 - 3.1.1 - 3.1.2 - 3.1.3 - 3.1.4 - 3.1.5 - 3.1.6 And it didn't work in these: - 3.2.0 - 3.2.1 - 3.2.2 - 3.2.3 - 3.2.4 - 3.2.5 - 3.2.6 - 3.3.6 - 3.3.7 I didn't find anything in the Patch notes of ruby 3.2.0 about the changed behavior. Did I miss something? ---Files-------------------------------- test.dat (142 Bytes) -- https://bugs.ruby-lang.org/