If you extend what you already have,
$line =~ m/StreamTitle='(.*?)(?:'|\z)/i;
or just
$line =~ m/StreamTitle='(.*?)'?/i;

However, if you replace the .*? with the more predictable [^']*, you don't even have to match the end quote:
$line =~ m/StreamTitle='([^']*)/i;

Update: I knew I avoided .*? for a reason. Struck out a bad "solution".

In reply to Re: Including "End of String" in character class? by ikegami
in thread Including "End of String" in character class? by doran

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