bug#19393: 25.0.50; Emacs cannot determine coding system of ISO-8859 encoded files

[Eli Zaretskii]

> From: Wolfgang Jenkner <wjenkner@inode.at>
> Cc: 19393@debbugs.gnu.org
> Date: Tue, 13 Jan 2015 15:06:01 +0100
> 
> However, if the file in question is compressed
> revert-buffer-with-coding-system still takes 4 minutes (the user time
> being dominated to 98% by memmove).

Is the problem with compressed files due to the fact that the size is
unknown in advance?  If so, perhaps enlarging by more than was
requested (e.g., twice as large) will alleviate the problem?

Thanks.