I noticed a strange issue with some variable replacement text getting
replaced in a weird way.
It may be intentional. I just want to understand the differences and if it
is, or if its a newer bug.
Originally i was doing this to prepend data to an array like
"${array_[@]/#/${variable}}"
I simplified it down to just string replacement.
$ cat replacestring.sh
original_string="1|2|3|4"
replace_string=':\\'
echo "original: ${original_string} replace:${replace_string}"
echo "unquoted ${original_string/2/${replace_string}}"
echo "quoted ${original_string/2/"${replace_string}"}"
GNU bash, version 5.2.37(1)-release (x86_64-pc-linux-gnu)
$ bash replacestring.sh
original: 1|2|3|4 replace::\\
unquoted 1|:\|3|4
quoted 1|:\\|3|4
on older versions, this was a little different:
GNU bash, version 4.1.2(2)-release (x86_64-redhat-linux-gnu)
$ bash /tmp/replacestring.sh
original: 1|2|3|4 replace::\\
unquoted 1|:\\|3|4
quoted 1|":\\"|3|4
Then, there was an inbetween version: (custom but based on this)
GNU bash, version 5.1.16(1)-release (x86_64-pc-linux-musl)
original: 1|2|3|4 replace::\\
unquoted 1|:\\|3|4
quoted 1|:\\|3|4
newer versions, unquoted the replacement loses a backslash
old version, the quoted version has the quotes as part of the replacement
Jeff
