D:\PerlMonks>regex1.pl
----- Without quotemeta ---------------
Using regular expression /test.dat/:
    Match:  "test.dat"
    Match:  "testadat.exe"
Using regular expression /test.exe/:
    Match:  "test.exe"
    Match:  "testaexe.dat"
----- With quotemeta ------------------
Using regular expression /test\.dat/:
    Match:  "test.dat"
Using regular expression /test\.exe/:
    Match:  "test.exe"
----- Fini ----------------------------

D:\PerlMonks>