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bug#29680: another grep-find anomalous behaviour


From: Donald H Locker
Subject: bug#29680: another grep-find anomalous behaviour
Date: Mon, 18 Dec 2017 12:18:41 -0500
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0

I'm going to suggest this bug be held in abeyance until I test a few other issues; this may well be a cygwin behaviour, in retrospect.

I recently had to change all of my "egrep" to "grep -E" to address other issues, likely related to cygwin updates. My system log indicates updates of cygwin on 03Nov2017, 27Nov2017, 05Dec2017, and 15Dec2017. (This is the largest cluster of updates I have done within the last year.) Curiously, the 27Nov update included a w32api-runtime update, and this approximately coincides with the beginning of some of the troubles I am having. (I use find-grep _a_lot_ and don't remember ever having any problems until recently. I probably should have looked at my system log before raising a bug about emacs.)

To answer the question:

My typing was the source of the 'quotes' and the \\quoted-* (the default command presented in the minibuffer was

   find . -type f -exec grep -nHE  {} \;

I supply the "-name 'blahblah'" and the "regexp".)

Donald.
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On 18-Dec-2017 11:21, Eli Zaretskii wrote:
Cc: address@hidden
From: Donald H Locker <address@hidden>
Date: Mon, 18 Dec 2017 07:35:22 -0500

It would appear that quoting of the '*.log' part of the command is at
fault.  Changing the line from

    -name '*.log'
to

    -name \\*.log

allows the find to proceed normally. There are several files with .log
extensions in the directory from which the find-grep fails.

Makes sense.

It's probably some subtle snafu with command-line quoting.  Were the
'qoutes' typed by you, or did Emacs produce them?

In any case, if you can spot where this quoting goes wrong, please
tell the details.  The combination of a native Windows Emacs and
Cygwin shell/utilities is relatively less well tested and has
subtleties, so I'm not surprised to hear about such problems.






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