Three quick observations:

  1. You can make the match more efficient by anchoring it to the end of the string: m/(.{10,}XYZQW.*\.csv$)/i

  2. .{10,}.* says “match at least 10 characters, followed by 0 or more characters”. It is equivalent to .{10,} by itself, i.e., the additional .* is redundant.

  3. The /g modifier is also redundant here.

Hope that helps,

Athanasius <°(((>< contra mundum Iustus alius egestas vitae, eros Piratica,

In reply to Re: Best way to match a file. by Athanasius
in thread Best way to match a file. by Anonymous Monk

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