Escaping an equals sign in DOS batch string replacement command

Question

I need to replace some text in a JNLP file using a DOS batch file to tune it for the local machine.

The problem is that the search pattern contains an equals sign wh

Answer 1

One cannot simply replace (a substring with) an equal-sign, without splitting up (for-statement with "delims==") or trimming…

But perhaps you could go for this simpler but more confusing approach, using the following statement in your for-loop:

set str=!str:"100M" max-heap-size="%min%M" max-heap-size!

It just combines the string to replace with what comes after instead of what comes before, avoiding any equal-sign replacements entirely.