gentoo-overlay/sys-apps/file/files/file-5.40-revert-char-count.patch

From c07e242e766242a44ff720c149b1bdd4924ec247 Mon Sep 17 00:00:00 2001
From: Christos Zoulas <christos@zoulas.com>
Date: Tue, 27 Apr 2021 19:37:14 +0000
Subject: [PATCH] Revert the fix for PR/180. It lead to PR/261. Using character
 count heuristics ends up with confusing behavior, the following should not be
 producing different results:     echo -n xx | ./file -     echo -n xy |
 ./file -

---
[patch backported to 5.40 release -- ulm]

 src/encoding.c | 15 ++-------------
 1 file changed, 2 insertions(+), 13 deletions(-)

diff --git a/src/encoding.c b/src/encoding.c
index 31d4d125..3647a481 100644
--- a/src/encoding.c
+++ b/src/encoding.c
@@ -265,9 +265,7 @@ private int \
 looks_ ## NAME(const unsigned char *buf, size_t nbytes, file_unichar_t *ubuf, \
     size_t *ulen) \
 { \
-	size_t i, u; \
-	unsigned char dist[256]; \
-	memset(dist, 0, sizeof(dist)); \
+	size_t i; \
 \
 	*ulen = 0; \
 \
@@ -278,16 +276,7 @@ looks_ ## NAME(const unsigned char *buf, size_t nbytes, file_unichar_t *ubuf, \
 			return 0; \
 \
 		ubuf[(*ulen)++] = buf[i]; \
-		dist[buf[i]]++; \
 	} \
-	u = 0; \
-	for (i = 0; i < __arraycount(dist); i++) { \
-		if (dist[i]) \
-			u++; \
-	} \
-	if (u < 3) \
-		return 0; \
-\
 	return 1; \
 }
 
-- 
2.32.0