On 03/03/2011 10:18 AM, Nathanael D. Noblet wrote: > On 03/02/2011 11:55 PM, Toshio Kuratomi wrote: > >> I'd say, report this as a bug and see where it leads. It's certainly not >> expected behaviour even if it is intentional. > > > https://bugzilla.redhat.com/show_bug.cgi?id=681940 > > > as well I submitted to bash upstream with bashbug which submits to a > mailling list of all things... I can't submit using the bashbug-32 from mock... here's what I was *trying* to submit if anyone feels like submitting to bash upstream for me? I will also put this in the bug incase the bash maintainer has an upstream contact. Subject: change in case evaluation handling Configuration Information [Automatically generated, do not change]: Machine: i386 OS: linux-gnu Compiler: gcc Compilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='i386' -DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i386-redhat-linux-gnu' -DCONF_VENDOR='redhat' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL -DHAVE_CONFIG_H -DDEBUG -DMALLOC_DEBUG -I. -I. -I./include -I./lib -D_GNU_SOURCE -DRECYCLES_PIDS -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i686 -mtune=atom -fasynchronous-unwind-tables uname output: Linux iridium.gnat.ca 2.6.35.11-83.fc14.x86_64 #1 SMP Mon Feb 7 07:06:44 UTC 2011 i686 i686 i386 GNU/Linux Machine Type: i386-redhat-linux-gnu Bash Version: 4.2 Patch Level: 0 Release Status: rc2 Description: The following script illustrates a regression in handline case evaluations case x"" in x) echo 'expected' ;; x??) echo 'this would be really odd' ;; x?) echo 'does this prove anything?' echo x""x ;; *) echo 'no match' ;; esac as output you get: => does this prove anything xx In bash 4.1.X you would get as output 'expected'. The issue was found by configure failing with lines like case x"$enable_feature" in where enable_feature hadn't been passed to configure so the variable was undefined. I should note that handling if [ x"$some_undefined_var" = x ]; continues to function the same way as previous versions Repeat-By: using the following script (named test_script for me): ====================================== #!/bin/sh case x"$mytest" in xyes) echo "yes" ;; xno) echo "no" ;; x) echo "empty" ;; *) echo "not supported" ;; esac mytest=$1 case x"$mytest" in xyes) echo "yes" ;; xno) echo "no" ;; x) echo "empty" ;; *) echo "not supported" ;; esac exit; ========================================= and call it with sh test_script yes sh test_script no sh test_script whatever sh test_script 4.1.X has the following output: - sh test_script yes empty yes - sh test_script no empty no - sh test_script whatever empty not supported - sh test_script empty empty 4.2.0 has the following output: - sh test_script yes not supported yes - sh test_script no not supported no - sh test_script whatever not supported not supported - sh test_script not supported not supported -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
