From 94c5cd7b2ce995a2ce9f58da706fc5ec6caf6c77 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bartek=20Iwa=C5=84czuk?= <biwanczuk@gmail.com>
Date: Tue, 14 Sep 2021 00:41:34 +0200
Subject: [PATCH] docs: Update --config flag help text (#12059)

---
 cli/flags.rs | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/cli/flags.rs b/cli/flags.rs
index 81981b2786147..1b0aab1cf18d3 100644
--- a/cli/flags.rs
+++ b/cli/flags.rs
@@ -1629,7 +1629,17 @@ fn config_arg<'a, 'b>() -> Arg<'a, 'b> {
     .short("c")
     .long("config")
     .value_name("FILE")
-    .help("Load tsconfig.json configuration file")
+    .help("Load configuration file")
+    .long_help(
+      "Load configuration file.
+Before 1.14 Deno only supported loading tsconfig.json that allowed
+to customise TypeScript compiler settings. 
+
+Starting with 1.14 configuration file can be used to configure different 
+subcommands like `deno lint` or `deno fmt`. 
+
+It's recommended to use `deno.json` or `deno.jsonc` as a filename.",
+    )
     .takes_value(true)
 }