I would think so too, reading the docs. But with /^\Q$stack\E$/, I get: 

Service name: "MY NEW SERVICE (TMP)"
Popping stack: . Adding to stack: "MY NEW SERVICE (TMP)"
Service name: "MY NEW SERVICE (TMP)"
It's on stack, keep compiling

[download]

And with /^\Q$stack$/, I get: 

Service name: "MY NEW SERVICE (TMP)"
Popping stack: . Adding to stack: "MY NEW SERVICE (TMP)"
Service name: "MY NEW SERVICE (TMP)"
Popping stack: "MY NEW SERVICE (TMP)". Adding to stack: "MY NEW SERVIC
+E (TMP)"

[download]

More simply: 

$ perl -e "$x=$_='()';print/^\Q$x\E$/?YES:NO"
YES
$ perl -e "$x=$_='()';print/^\Q$x$/?YES:NO"
NO

[download]

In reply to Re^4: Problems with a regex? by hbm
in thread Problems with a regex? by dwlepage

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