Fix an error in Tramp for rsync

[gnu-emacs] / src / fileio.c

diff --git a/src/fileio.c b/src/fileio.c
index facc4bef927d54fd2f4772dce083232a34c71a41..b1f9d3cf73aaf6216802eeec6bd9e746412fa620 100644 (file)
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -3359,6 +3359,21 @@ restore_window_points (Lisp_Object window_markers, ptrdiff_t inserted,
       }
 }
 
+/* Make sure the gap is at Z_BYTE.  This is required to treat buffer
+   text as a linear C char array.  */
+static void
+maybe_move_gap (struct buffer *b)
+{
+  if (BUF_GPT_BYTE (b) != BUF_Z_BYTE (b))
+    {
+      struct buffer *cb = current_buffer;
+
+      set_buffer_internal (b);
+      move_gap_both (Z, Z_BYTE);
+      set_buffer_internal (cb);
+    }
+}
+
 /* FIXME: insert-file-contents should be split with the top-level moved to
    Elisp and only the core kept in C.  */
 
@@ -3942,6 +3957,7 @@ by calling `format-decode', which see.  */)
 
       coding_system = CODING_ID_NAME (coding.id);
       set_coding_system = true;
+      maybe_move_gap (XBUFFER (conversion_buffer));
       decoded = BUF_BEG_ADDR (XBUFFER (conversion_buffer));
       inserted = (BUF_Z_BYTE (XBUFFER (conversion_buffer))
                  - BUF_BEG_BYTE (XBUFFER (conversion_buffer)));