Some incorrect behaviour for BASH arrays

[Victor Pasko]

Hi,

On my Win-7 64-bit using Cygwin


*% bash --version*GNU bash, version 5.2.15(3)-release (x86_64-pc-cygwin)
Copyright (C) 2022 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html
>

This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.


*% echo LANG=$LANG; echo LC_ALL=$LC_ALL*LANG=
LC_ALL=

Attached please find bug.bash to reproduce incorrect BASH behaviour for
BASH arrays
and look at ways to run it


*% . bug.bash no*
VERBOSE=no
GOOD variants of sed
        string=Bb12345678 QSTRING=10
        result=Bb12345678 size=10 Bb12345678

        string=bB123-4567-8 QSTRING=12
        result=bB123\-4567\-8 size=14 bB123\-4567\-8
BAD variants of sed
        string=Bb12345678 QSTRING=10
        result=B size=1 B

        string=bB123-4567-8 QSTRING=12
        result=b size=1 b
GOOD variant of rev
        string=123456789 QSTRING=9
        result=987654321 size=9
BAD variant of rev
        string=123456789 QSTRING=9
        result=9 size=1


*% . bug.bash yes*
VERBOSE=yes
GOOD variants of sed
        string=Bb12345678 QSTRING=10
DEBUG i-symbol=B
DEBUG i-symbol=b
DEBUG i-symbol=1
DEBUG i-symbol=2
DEBUG i-symbol=3
DEBUG i-symbol=4
DEBUG i-symbol=5
DEBUG i-symbol=6
DEBUG i-symbol=7
DEBUG i-symbol=8
        result=Bb12345678 size=10 Bb12345678

        string=bB123-4567-8 QSTRING=12
DEBUG i-symbol=b
DEBUG i-symbol=B
DEBUG i-symbol=1
DEBUG i-symbol=2
DEBUG i-symbol=3
DEBUG i-symbol=-
DEBUG i-symbol=4
DEBUG i-symbol=5
DEBUG i-symbol=6
DEBUG i-symbol=7
DEBUG i-symbol=-
DEBUG i-symbol=8
        result=bB123\-4567\-8 size=14 bB123\-4567\-8
BAD variants of sed
        string=Bb12345678 QSTRING=10
DEBUG i-symbol=B
DEBUG i-symbol=b
DEBUG i-symbol=1
DEBUG i-symbol=2
DEBUG i-symbol=3
DEBUG i-symbol=4
DEBUG i-symbol=5
DEBUG i-symbol=6
DEBUG i-symbol=7
DEBUG i-symbol=8
        result=B size=1 B

        string=bB123-4567-8 QSTRING=12
DEBUG i-symbol=b
DEBUG i-symbol=B
DEBUG i-symbol=1
DEBUG i-symbol=2
DEBUG i-symbol=3
DEBUG i-symbol=-
DEBUG i-symbol=4
DEBUG i-symbol=5
DEBUG i-symbol=6
DEBUG i-symbol=7
DEBUG i-symbol=-
DEBUG i-symbol=8
        result=b size=1 b
GOOD variant of rev
        string=123456789 QSTRING=9
DEBUG i-symbol=9
DEBUG i-symbol=8
DEBUG i-symbol=7
DEBUG i-symbol=6
DEBUG i-symbol=5
DEBUG i-symbol=4
DEBUG i-symbol=3
DEBUG i-symbol=2
DEBUG i-symbol=1
        result=987654321 size=9
BAD variant of rev
        string=123456789 QSTRING=9
DEBUG i-symbol=9
DEBUG i-symbol=8
DEBUG i-symbol=7
DEBUG i-symbol=6
DEBUG i-symbol=5
DEBUG i-symbol=4
DEBUG i-symbol=3
DEBUG i-symbol=2
DEBUG i-symbol=1
XXX-break i=9 result=9 size=1
        result=9 size=1

*% BTW The following lines in bug.bash are just for researching and
unneeded at all*

if [ $i -ge $QSTRING ] ; then
echo "XXX-break i=$i result=$RESULT size=${#RESULT}"
break # XXX
fi

*% ls -al bug.bash*

-rw-r--r--+ 1 victor None 2104 Aug 31 00:55 bug.bash
--

-- PSK

bug.bash
Description: Binary data