Configuration Information [Automatically generated, do not change]:
Machine: x86_64
OS: linux-gnu
Compiler: gcc -I/home/abuild/rpmbuild/BUILD/bash-4.3
-L/home/abuild/rpmbuild/BUILD/bash-4.3/../readline-6.3
Compilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='x86_64'
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='x86_64-suse-linux-gnu'
-DCONF_VENDOR='suse' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL
-DHAVE_CONFIG_H -I. -I. -I./include -I./lib -fmessage-length=0
-grecord-gcc-switches -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector
-funwind-tables -fasynchronous-unwind-tables -fstack-clash-protection -g
-D_GNU_SOURCE -DRECYCLES_PIDS -Wall -g -Wuninitialized -Wextra
-Wno-unprototyped-calls -Wno-switch-enum -Wno-unused-variable
-Wno-unused-parameter -Wno-parentheses -ftree-loop-linear -pipe -DBNC382214=0
-DIMPORT_FUNCTIONS_DEF=0 -fprofile-use
uname output: Linux weasel 4.4.132-53-default #1 SMP Wed May 23 06:57:07 UTC
2018 (036cd2f) x86_64 x86_64 x86_64 GNU/Linux
Machine Type: x86_64-suse-linux-gnu
Bash Version: 4.3
Patch Level: 42
Release Status: release
Description:
Bash seems to have a parens checking problem with patterns in a case statement
using the -n option. I need a "case" where I can identify a word where a word
starts with a letter and may be followed by zero or more letters, digits,
dashes or underscores. It works fine when running, but miserably fails the bash
-n test, which I also *need* it to pass. Or am I doing something wrong here?
System is openSUSE 42.3, all current patches applied. I can't change that.
Repeat-By:
file: case-test (700)
==================8<------------------
#!/bin/bash
shopt -s extglob
case "${1}" in
+([[:alpha:]])*([[:alnum:]-_]))
echo "${1} matches" ;;
# ... some more cases here...
*) echo "no match." ;;
esac
==================8<------------------
Runs fine:
$ ./case-test "y"
y matches
$ ./case-test "1"
no match.
$ ./case-test "yes17match"
yes17match matches
$ ./case-test "17nomatch"
no match.
But fails -n check:
$ bash -n case-test
case-test: line 5: syntax error near unexpected token `('
case-test: line 5: ` +([[:alpha:]])*([[:alnum:]-_]))'
Also tried with leading open parens and other variations:
(+([[:alpha:]])*([[:alnum:]-_]))
(@([[:alpha:]])*([[:alnum:]-_]))
[[:alpha:]]*([[:alnum:]-_]))
...
Didn't work. All fail bash -n. Please advise.
--
cul8er
Paul
paul.foers...@gmail.com
