[ruby-core:94213] [Ruby master Bug#8279] Single-line rescue parsing
From:
merch-redmine@...
Date:
2019-08-09 03:12:04 UTC
List:
ruby-core #94213
Issue #8279 has been updated by jeremyevans0 (Jeremy Evans). File massign-rescue-modifier-8279.patch added This bug is still present in the master branch. Attached is a patch that fixes it, so that multiple assignment with rescue modifier is consistent with single assignment with rescue modifier. After the patch: ``` a = raise rescue 1 # a = (raise rescue 1) a, b = raise rescue [1, 2] # a, b = (raise rescue [1, 2]) ``` ---------------------------------------- Bug #8279: Single-line rescue parsing https://bugs.ruby-lang.org/issues/8279#change-80511 * Author: dunric (David Unric) * Status: Open * Priority: Normal * Assignee: matz (Yukihiro Matsumoto) * Target version: * ruby -v: 2.0.0p0 * Backport: ---------------------------------------- Hi, there seems to be a bug in parser for single-line rescue statement. It fails in case of multiple assignment statements, keeping operator precedence vs. simple assignment etc. obj = expression rescue objval # parsed as obj = (expression rescue objval) obj1, obj2 = expression rescue [objval1, objval2] # parsed as (obj1, obj2 = expression) rescue [objval1, objval2] obj += expression rescue objval # parsed as obj += (expression rescue objval) obj = obj + expression rescue objval # parsed as obj = (obj + expression) rescue objval There is already a thread about this issue on ruby-forum.com, even Matz himself is aware and did gave a nod to this problem http://www.ruby-forum.com/topic/152260#671711 , though nothing was done to fix it yet. I've tried to report about this problem once (http://bugs.ruby-lang.org/issues/8239) but it was ignored for no known reason. ---Files-------------------------------- massign-rescue-modifier-8279.patch (2.08 KB) -- https://bugs.ruby-lang.org/ Unsubscribe: <mailto:ruby-core-request@ruby-lang.org?subject=unsubscribe> <http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>