URL:
<http://savannah.gnu.org/bugs/?29551>
Summary: [ENH] grep listens in vain forever on STDIN even if
-r flag (and no file) is supplied
Project: grep
Submitted by: torgehusfeldt
Submitted on: Wed 14 Apr 2010 11:24:43 AM GMT
Category: None
Severity: 3 - Normal
Item Group: None
Status: None
Privacy: Public
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
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Details:
Observations:
1. People tend to be sloppy
2. There is no way to "recursively" read from STDIN -- at least that i know
of
3. grep will try to read from STDIN forever if -r (--recursive) and no
file/directory is supplied
4. People accidentally calling grep with this combination of parameters will
often expect a considerable delay before seeing the first result and thus are
even more frustrated when finally realizing that grep wasn't working at all,
but waitin
Proposal:
a. immediately issue a warning/error message if this combination occurs
or:
b. issue a warning/error message if this combination occurs and no input is
read for some time (~10 seconds?)
In both cases the new behavior can be avoided by providing explicit "-" as
filename -- if this seems useful
c. (least preferred, but maybe closest to what the user expects -- who
knows?!) if the combination occurs assume "." as starting point
Thanks for considering.
-- maybe I'm especially dumb, but I've been bitten by this time and again
and always very painfully
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