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Re: Warn when editing read-only files

From: Antonio Diaz Diaz
Subject: Re: Warn when editing read-only files
Date: Fri, 17 Nov 2023 14:01:15 +0100
User-agent: Mozilla/5.0 (X11; U; Linux i586; en-US; rv: Gecko/20110420 SeaMonkey/2.0.14

Dan Jacobson wrote:
"PJ" == Paul Jackson<pj@usa.net>  writes:
PJ>  might have intended only to read a file, not write it

OK, no warning then upon opening a read only file. Fine.

But ah ha, how about a warning upon using a "a" or "i" etc. command?

The other editor I maintain (GNU moe) does exactly this; if you try to modify a read-only file it complains with "Read only". So this should be doable in GNU ed as soon as we find a way to reset the 'read_only' flag. Maybe by changing the name of the file with 'f'?

Suggestions are welcome.


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