On 02/28/2012 05:22 PM, Roman Rakus wrote:
> On 02/28/2012 05:10 PM, John Kearney wrote:
>> wrap it with single quotes and globally replace all single quotes
>> in the string with '\''
> single quote and slash have special meaning so they have to be
> escaped, that's it. \'${var//\'/\\\'}\' it is not quoted, so it
> undergoes word splitting. To avoid it quote it in double quotes,
> however it changes how slash and single quote is treated.
> "'${var//\'/\'}'"
>
> Wasn't it already discussed on the list?
>
> RR
>
It was discussed but not answered in a way that helped.
Look consider this
test=teststring
echo "${test//str/"dddd"}"
test"dddd"ing
echo ${test//str/"dddd"}
testdddding
echo ${test//str/"'"}
test'ing
echo "${test//str/"'"}"
test"'"ing
echo "${test//str/'}" # hangs
now consider this case
test=test\'string
echo "${test//"'"/"'"}"
test"'"string
the match string and the replace string are exhibiting 2 different
behaviors.
Now I'm not looking foe a workaround, I want to understand it.
Now you say they are treated special what does that mean and how can I
escape that specialness.
Or show me how without using variables
to do this
test=test\'string
[ "${test}" = "${test//"'"/"'"}" ] || exit 999
Note this isn't the answer
[ "${test}" = "${test//'/'}" ] || exit 999
