Match all occurance of double quotes in a string

I have a string something like this…
“Now is the time for all good men to blah, blah…” - Origin unknown

I want to convert it to this…
Now is the time for all good men to blah, blah… - Origin
unknown

With the first double quote converted to “" and the second to "”.
The occurance of the 1st double quote may or may not be at the beginning
of the string.

Patrick S. wrote:

Rather simplistic, but should work:

string.sub(/"([^"]*)"/, ‘\1’)

Alex Y. wrote:

Patrick S. wrote:

Rather simplistic, but should work:

string.sub(/"([^"]*)"/, ‘\1’)

I like simple, thanks!