The -l option causes a looser behavior of patch(1), where patches
are applied when there is a match with no regard to leading
whitespace. This means that it is possible to get false positives:
for example, in srcpkgs/glu, there is a patch that was supposed
to be long gone (since the release already includes it) but it
was overlooked since with -l it happens to apply in a different
portion of the source (where it is wrong).
Avoid these cases.
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