grep: add --threads=<num> option and grep.threads configuration

diff --git a/git-compat-util.h b/git-compat-util.h
index 1df82fa598daa131c9e84023083a014ac3ee3f9f..88964f7886b1f6d7445b77a26eceb65d48c3b6b8 100644 (file)
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -229,7 +229,7 @@ typedef unsigned long uintptr_t;
 #else
 #define precompose_str(in,i_nfd2nfc)
 #define precompose_argv(c,v)
-#define probe_utf8_pathname_composition(a,b)
+#define probe_utf8_pathname_composition()
 #endif
 
 #ifdef MKDIR_WO_TRAILING_SLASH
@@ -744,6 +744,9 @@ static inline size_t xsize_t(off_t len)
        return (size_t)len;
 }
 
+__attribute__((format (printf, 3, 4)))
+extern int xsnprintf(char *dst, size_t max, const char *fmt, ...);
+
 /* in ctype.c, for kwset users */
 extern const unsigned char tolower_trans_tbl[256];