Add RM_ReplyWithErrorFormat that can support format (#11923)

* Add RM_ReplyWithErrorFormat that can support format

Reply with the error create from a printf format and arguments.

If the error code is already passed in the string 'fmt', the error
code provided is used, otherwise the string "-ERR " for the generic
error code is automatically added.

The usage is, for example:
    RedisModule_ReplyWithErrorFormat(ctx, "An error: %s", "foo");
    RedisModule_ReplyWithErrorFormat(ctx, "-WRONGTYPE Wrong Type: %s", "foo");

The function always returns REDISMODULE_OK.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/server.h b/src/server.h
index 02ec91ee0..b286b6803 100644
--- a/src/server.h
+++ b/src/server.h
@@ -2553,6 +2553,7 @@ void setDeferredReplyBulkSds(client *c, void *node, sds s);
 void addReplyErrorObject(client *c, robj *err);
 void addReplyOrErrorObject(client *c, robj *reply);
 void afterErrorReply(client *c, const char *s, size_t len, int flags);
+void addReplyErrorFormatInternal(client *c, int flags, const char *fmt, va_list ap);
 void addReplyErrorSdsEx(client *c, sds err, int flags);
 void addReplyErrorSds(client *c, sds err);
 void addReplyErrorSdsSafe(client *c, sds err);