[ruby-core:77957] [Ruby trunk Bug#10055] Shellwords.shellsplit() does not match POSIX sh behavior for backslashes within double-quoted strings
From:
knu@...
Date:
2016-11-05 05:00:42 UTC
List:
ruby-core #77957
Issue #10055 has been updated by Akinori MUSHA. That is correct! I've fixed the implementation to conform to the standard. ---------------------------------------- Bug #10055: Shellwords.shellsplit() does not match POSIX sh behavior for backslashes within double-quoted strings https://bugs.ruby-lang.org/issues/10055#change-61284 * Author: Charles Duffy * Status: Closed * Priority: Normal * Assignee: Akinori MUSHA * ruby -v: ruby 2.2.0dev (2014-07-18 trunk 46855) [x86_64-linux] * Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN ---------------------------------------- In POSIX sh, the following commands are identical: ~~~ printf '%s\n' hello world printf "%s\n" hello world ~~~ However, Shellwords.shellsplit() parses them differently: ~~~ head :001 > require 'shellwords' => true head :002 > Shellwords.shellsplit(%q|printf "%s\\n"|) => ["printf", "%sn"] head :003 > Shellwords.shellsplit(%q|printf '%s\\n'|) => ["printf", "%s\\n"] ~~~ The documentation for the shellwords module claims that its parser is compatible with Bourne; however, it does not match either this 1970s-era shell language or modern POSIX sh (which is the actual specification used for /bin/sh on modern systems, and incompatible in some respects with original Bourne), both of which preserve backslashes in this context. -- https://bugs.ruby-lang.org/ Unsubscribe: <mailto:[email protected]?subject=unsubscribe> <http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>