--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/contrib/chg/hgclient.h	Sun Jan 03 12:39:27 2016 +0900
@@ -0,0 +1,29 @@
+/*
+ * A command server client that uses Unix domain socket
+ *
+ * Copyright (c) 2011 Yuya Nishihara <yuya@tcha.org>
+ *
+ * This software may be used and distributed according to the terms of the
+ * GNU General Public License version 2 or any later version.
+ */
+
+#ifndef HGCLIENT_H_
+#define HGCLIENT_H_
+
+#include <sys/types.h>
+
+struct hgclient_tag_;
+typedef struct hgclient_tag_ hgclient_t;
+
+hgclient_t *hgc_open(const char *sockname);
+void hgc_close(hgclient_t *hgc);
+
+pid_t hgc_peerpid(const hgclient_t *hgc);
+
+int hgc_runcommand(hgclient_t *hgc, const char *const args[], size_t argsize);
+void hgc_attachio(hgclient_t *hgc);
+const char *hgc_getpager(hgclient_t *hgc, const char *const args[],
+			 size_t argsize);
+void hgc_setenv(hgclient_t *hgc, const char *const envp[]);
+
+#endif  /* HGCLIENT_H_ */