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bug#41002: Undo breaks inhibit-read-only text property
From: |
Eli Zaretskii |
Subject: |
bug#41002: Undo breaks inhibit-read-only text property |
Date: |
Sat, 09 May 2020 10:37:52 +0300 |
> From: Filipp Gunbin <fgunbin@fastmail.fm>
> Date: Sun, 03 May 2020 06:22:20 +0300
> Cc: 41002@debbugs.gnu.org, larsi@gnus.org
>
> --- a/src/textprop.c
> +++ b/src/textprop.c
> @@ -2301,0 +2301,4 @@
> + if (i->position + LENGTH (i) < end
> + && (!NILP (BVAR (current_buffer, read_only))
> + && NILP (Vinhibit_read_only)))
> + xsignal1 (Qbuffer_read_only, Fcurrent_buffer ());
>
> So if there happens to be an (writeable) interval ending before "end"
> (the end of the region we're killing with C-w), we will signal that the
> buffer is read-only. This may be read as "if we're going over the
> boundary of an interval, then check the _buffer_ read-onliness". Maybe
> Lars, as the author of this code, could comment on this.
I think you are right: we need to augment this with something that
pays attention to the inhibit-read-only property. Would you like to
suggest a patch?
Btw, how is this related to undo?
Thanks.