From: Eli Zaretskii <eliz@gnu.org>
Date: Wed, 30 Aug 2023 14:16:59 +0000 (+0300)
Subject: Fix revert-buffer when some decoding is involved
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=8650b3308dd83d6f87ed14562c7d55c8bfde3faf;p=emacs.git

Fix revert-buffer when some decoding is involved

* src/fileio.c (Finsert_file_contents): Fix the amount of text
read from the file when reverting.  (Bug#65609)
---

diff --git a/src/fileio.c b/src/fileio.c
index 23e1a83d8bf..8919e08e1fd 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -4805,7 +4805,7 @@ by calling `format-decode', which see.  */)
 
 	/* 'try' is reserved in some compilers (Microsoft C).  */
 	ptrdiff_t trytry = min (gap_size, READ_BUF_SIZE);
-	if (!NILP (end))
+	if (seekable || !NILP (end))
 	  trytry = min (trytry, total - inserted);
 
 	if (!seekable && NILP (end))