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-rw-r--r--src/doc.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/doc.c b/src/doc.c
index 29f232e666d..d27fa3f792d 100644
--- a/src/doc.c
+++ b/src/doc.c
@@ -253,7 +253,9 @@ get_doc_string (Lisp_Object filepos, int unibyte, int definition)
else if (c == '_')
*to++ = 037;
else
- error ("Invalid data in documentation file -- ^A followed by code 0%o", c);
+ error ("\
+Invalid data in documentation file -- %c followed by code %03o",
+ 1, (unsigned)c);
}
else
*to++ = *from++;