thodg/libgit2

diff --git a/include/git2/repository.h b/include/git2/repository.h
index b4d5619..c6bd4dc 100644
--- a/include/git2/repository.h
+++ b/include/git2/repository.h
@@ -488,13 +488,13 @@ GIT_EXTERN(int) git_repository_message(char *out, size_t len, git_repository *re
 GIT_EXTERN(int) git_repository_message_remove(git_repository *repo);
 
 /**
- * Remove all the metadata associated with an ongoing git merge, including
- * MERGE_HEAD, MERGE_MSG, etc.
+ * Remove all the metadata associated with an ongoing command like merge,
+ * revert, cherry-pick, etc.  For example: MERGE_HEAD, MERGE_MSG, etc.
  *
  * @param repo A repository object
  * @return 0 on success, or error
  */
-GIT_EXTERN(int) git_repository_merge_cleanup(git_repository *repo);
+GIT_EXTERN(int) git_repository_state_cleanup(git_repository *repo);
 
 typedef int (*git_repository_fetchhead_foreach_cb)(const char *ref_name,
 	const char *remote_url,
diff --git a/src/merge.c b/src/merge.c
index c31a935..05e656d 100644
--- a/src/merge.c
+++ b/src/merge.c
@@ -2362,6 +2362,17 @@ done:
 	return error;
 }
 
+static int merge_state_cleanup(git_repository *repo)
+{
+	const char *state_files[] = {
+		GIT_MERGE_HEAD_FILE,
+		GIT_MERGE_MODE_FILE,
+		GIT_MERGE_MSG_FILE,
+	};
+
+	return git_repository__cleanup_files(repo, state_files, ARRAY_SIZE(state_files));
+}
+
 int git_merge(
 	git_merge_result **out,
 	git_repository *repo,
@@ -2453,7 +2464,7 @@ int git_merge(
 	goto done;
 
 on_error:
-	git_repository_merge_cleanup(repo);
+	merge_state_cleanup(repo);
 
 	git_index_free(index_new);
 	git__free(result);
@@ -2497,39 +2508,6 @@ int git_merge__setup(
 	return error;
 }
 
-int git_repository_merge_cleanup(git_repository *repo)
-{
-	int error = 0;
-	git_buf merge_head_path = GIT_BUF_INIT,
-		merge_mode_path = GIT_BUF_INIT,
-		merge_msg_path = GIT_BUF_INIT;
-
-	assert(repo);
-
-	if (git_buf_joinpath(&merge_head_path, repo->path_repository, GIT_MERGE_HEAD_FILE) < 0 ||
-		git_buf_joinpath(&merge_mode_path, repo->path_repository, GIT_MERGE_MODE_FILE) < 0 ||
-		git_buf_joinpath(&merge_msg_path, repo->path_repository, GIT_MERGE_MSG_FILE) < 0)
-		return -1;
-
-	if (git_path_isfile(merge_head_path.ptr)) {
-		if ((error = p_unlink(merge_head_path.ptr)) < 0)
-			goto cleanup;
-	}
-
-	if (git_path_isfile(merge_mode_path.ptr))
-		(void)p_unlink(merge_mode_path.ptr);
-
-	if (git_path_isfile(merge_msg_path.ptr))
-		(void)p_unlink(merge_msg_path.ptr);
-
-cleanup:
-	git_buf_free(&merge_msg_path);
-	git_buf_free(&merge_mode_path);
-	git_buf_free(&merge_head_path);
-
-	return error;
-}
-
 /* Merge result data */
 
 int git_merge_result_is_uptodate(git_merge_result *merge_result)
diff --git a/src/repository.c b/src/repository.c
index dcc02e4..278c038 100644
--- a/src/repository.c
+++ b/src/repository.c
@@ -1965,6 +1965,42 @@ int git_repository_state(git_repository *repo)
 	return state;
 }
 
+int git_repository__cleanup_files(git_repository *repo, const char *files[], size_t files_len)
+{
+	git_buf path = GIT_BUF_INIT;
+	size_t i;
+	int error = 0;
+
+	for (i = 0; i < files_len; ++i) {
+		git_buf_clear(&path);
+
+		if ((error = git_buf_joinpath(&path, repo->path_repository, files[i])) < 0 ||
+			(git_path_isfile(git_buf_cstr(&path)) &&
+			(error = p_unlink(git_buf_cstr(&path))) < 0))
+			goto done;
+	}
+
+done:
+	git_buf_free(&path);
+
+	return error;
+}
+
+static const char *state_files[] = {
+	GIT_MERGE_HEAD_FILE,
+	GIT_MERGE_MODE_FILE,
+	GIT_MERGE_MSG_FILE,
+	GIT_REVERT_HEAD_FILE,
+	GIT_CHERRY_PICK_HEAD_FILE,
+};
+
+int git_repository_state_cleanup(git_repository *repo)
+{
+	assert(repo);
+
+	return git_repository__cleanup_files(repo, state_files, ARRAY_SIZE(state_files));
+}
+
 int git_repository_is_shallow(git_repository *repo)
 {
 	git_buf path = GIT_BUF_INIT;
diff --git a/src/repository.h b/src/repository.h
index 832df3b..4e79714 100644
--- a/src/repository.h
+++ b/src/repository.h
@@ -169,4 +169,6 @@ GIT_INLINE(int) git_repository__ensure_not_bare(
 	return GIT_EBAREREPO;
 }
 
+int git_repository__cleanup_files(git_repository *repo, const char *files[], size_t files_len);
+
 #endif
diff --git a/src/reset.c b/src/reset.c
index a9780bf..261a365 100644
--- a/src/reset.c
+++ b/src/reset.c
@@ -149,7 +149,7 @@ int git_reset(
 			(error = git_index_write(index)) < 0)
 			goto cleanup;
 
-		if ((error = git_repository_merge_cleanup(repo)) < 0) {
+		if ((error = git_repository_state_cleanup(repo)) < 0) {
 			giterr_set(GITERR_INDEX, "%s - failed to clean up merge data", ERROR_MSG);
 			goto cleanup;
 		}
diff --git a/src/revert.c b/src/revert.c
index 34ba343..5660c99 100644
--- a/src/revert.c
+++ b/src/revert.c
@@ -9,7 +9,6 @@
 #include "repository.h"
 #include "filebuf.h"
 #include "merge.h"
-#include "revert.h"
 
 #include "git2/types.h"
 #include "git2/merge.h"
@@ -103,6 +102,13 @@ static int revert_normalize_opts(
 	return error;
 }
 
+static int revert_state_cleanup(git_repository *repo)
+{
+	const char *state_files[] = { GIT_REVERT_HEAD_FILE, GIT_MERGE_MSG_FILE };
+
+	return git_repository__cleanup_files(repo, state_files, ARRAY_SIZE(state_files));
+}
+
 int git_revert(
 	git_repository *repo,
 	git_commit *commit,
@@ -175,7 +181,7 @@ int git_revert(
 	goto done;
 
 on_error:
-	git_revert__cleanup(repo);
+	revert_state_cleanup(repo);
 
 done:
 	git_index_free(index_new);
@@ -188,30 +194,3 @@ done:
 
 	return error;
 }
-
-int git_revert__cleanup(git_repository *repo)
-{
-	int error = 0;
-	git_buf revert_head_path = GIT_BUF_INIT,
-		merge_msg_path = GIT_BUF_INIT;
-
-	assert(repo);
-
-	if (git_buf_joinpath(&revert_head_path, repo->path_repository, GIT_REVERT_HEAD_FILE) < 0 ||
-		git_buf_joinpath(&merge_msg_path, repo->path_repository, GIT_MERGE_MSG_FILE) < 0)
-		return -1;
-
-	if (git_path_isfile(revert_head_path.ptr)) {
-		if ((error = p_unlink(revert_head_path.ptr)) < 0)
-			goto cleanup;
-	}
-
-	if (git_path_isfile(merge_msg_path.ptr))
-		(void)p_unlink(merge_msg_path.ptr);
-
-cleanup:
-	git_buf_free(&merge_msg_path);
-	git_buf_free(&revert_head_path);
-
-	return error;
-}
diff --git a/src/revert.h b/src/revert.h
deleted file mode 100644
index ed39121..0000000
--- a/src/revert.h
+++ /dev/null
@@ -1,14 +0,0 @@
-/*
- * Copyright (C) the libgit2 contributors. All rights reserved.
- *
- * This file is part of libgit2, distributed under the GNU GPL v2 with
- * a Linking Exception. For full terms see the included COPYING file.
- */
-#ifndef INCLUDE_revert_h__
-#define INCLUDE_revert_h__
-
-#include "git2/repository.h"
-
-int git_revert__cleanup(git_repository *repo);
-
-#endif