bug#14013: 24.3.50; dired-isearch-filenames-regexp is matching text outside filenames

[Juri Linkov]

>> So the above rectangle when copied to a separate buffer:
>>
>>       456
>>       def
>>
>> do you expect it should match the regexp "456.def"?
>
> I would not want that this matches.

BTW, do you think that such regexps as ".*" and "^.*$"
should be supported not only in Dired buffers, but also
when making replacements in rectangular regions?
E.g. C-x SPC ... C-M-% .* RET RET should effectively
clear the region, etc.