I often get confused as to which is which myself.

This is the point of TheDamian's injunctions in Perl Best Practices (PBP) to always use the /m and /s (and /x) modifiers (BPs 148 and 151 – and 147) in every match and regex object definition:  . ^ $ always behave the same way and confusion is at least reduced if not eliminated.

In reply to Re^2: example of 'm / / m' related example and compare to 'm / / s' by AnomalousMonk
in thread PERL regex modifiers for m// by rockstar99

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