From bb57d4ec7559fb5a2cd83b31ffeea2dc73e89ab0 Mon Sep 17 00:00:00 2001
From: SkyperTHC <5938498+SkyperTHC@users.noreply.github.com>
Date: Fri, 3 Mar 2023 08:28:55 +0000
Subject: [PATCH] Dont COMMANDS DOCS if not TTY (not interactive) (#11850)

Avoiding initializing the interactive help and the excessive call to the COMMAND command when using redis-cli with pipe.
e.g.
```
echo PING | redis-cli
```
---
 src/redis-cli.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/redis-cli.c b/src/redis-cli.c
index b9d84c6d9..4e99e1099 100644
--- a/src/redis-cli.c
+++ b/src/redis-cli.c
@@ -2621,7 +2621,7 @@ static void repl(void) {
     /* There is no need to initialize redis HELP when we are in lua debugger mode.
      * It has its own HELP and commands (COMMAND or COMMAND DOCS will fail and got nothing).
      * We will initialize the redis HELP after the Lua debugging session ended.*/
-    if (!config.eval_ldb) {
+    if ((!config.eval_ldb) && isatty(fileno(stdin))) {
         /* Initialize the help using the results of the COMMAND command. */
         cliInitHelp();
     }