[PATCH 1/2] hex: drop sha1_to_hex_r()

[Jeff King <peff@peff.net>]

There are no callers left; everybody uses oid_to_hex_r() or
hash_to_hex_algop_r(). This used to actually be the underlying
implementation for oid_to_hex_r(), but that's no longer the case since
47edb64997 (hex: introduce functions to print arbitrary hashes,
2018-11-14).

Let's get rid of it to de-clutter and to make sure nobody uses it.
Likewise we can drop the coccinelle rules that mention it, since the
compiler will make it quite clear that the code does not work.

Signed-off-by: Jeff King <peff@peff.net>
---
 cache.h                            |  1 -
 contrib/coccinelle/object_id.cocci | 17 -----------------
 hex.c                              |  5 -----
 3 files changed, 23 deletions(-)

diff --git a/cache.h b/cache.h
index 04cabaac11..6a4eb221b3 100644
--- a/cache.h
+++ b/cache.h
@@ -1462,7 +1462,6 @@ int hex_to_bytes(unsigned char *binary, const char *hex, size_t len);
  *   printf("%s -> %s", sha1_to_hex(one), sha1_to_hex(two));
  */
 char *hash_to_hex_algop_r(char *buffer, const unsigned char *hash, const struct git_hash_algo *);
-char *sha1_to_hex_r(char *out, const unsigned char *sha1);
 char *oid_to_hex_r(char *out, const struct object_id *oid);
 char *hash_to_hex_algop(const unsigned char *hash, const struct git_hash_algo *);	/* static buffer result! */
 char *sha1_to_hex(const unsigned char *sha1);						/* same static buffer */
diff --git a/contrib/coccinelle/object_id.cocci b/contrib/coccinelle/object_id.cocci
index 3e536a9834..6c0d21d8e2 100644
--- a/contrib/coccinelle/object_id.cocci
+++ b/contrib/coccinelle/object_id.cocci
@@ -25,23 +25,6 @@ struct object_id *OIDPTR;
 + oid_to_hex(OIDPTR)
   ...>}
 
-@@
-expression E;
-struct object_id OID;
-@@
-- sha1_to_hex_r(E, OID.hash)
-+ oid_to_hex_r(E, &OID)
-
-@@
-identifier f != oid_to_hex_r;
-expression E;
-struct object_id *OIDPTR;
-@@
-   f(...) {<...
-- sha1_to_hex_r(E, OIDPTR->hash)
-+ oid_to_hex_r(E, OIDPTR)
-  ...>}
-
 @@
 struct object_id OID;
 @@
diff --git a/hex.c b/hex.c
index 7850a8879d..8c3f06a192 100644
--- a/hex.c
+++ b/hex.c
@@ -90,11 +90,6 @@ char *hash_to_hex_algop_r(char *buffer, const unsigned char *hash,
 	return buffer;
 }
 
-char *sha1_to_hex_r(char *buffer, const unsigned char *sha1)
-{
-	return hash_to_hex_algop_r(buffer, sha1, &hash_algos[GIT_HASH_SHA1]);
-}
-
 char *oid_to_hex_r(char *buffer, const struct object_id *oid)
 {
 	return hash_to_hex_algop_r(buffer, oid->hash, the_hash_algo);
-- 
2.24.0.739.gb5632e4929