From 659bfd31dcd702086a733ab792bfc2bd7b643349 Mon Sep 17 00:00:00 2001
From: Rushen Wang <45029442+dovics@users.noreply.github.com>
Date: Thu, 12 Sep 2024 09:57:35 +0800
Subject: [PATCH] Updated SC1138 (markdown)

---
 SC1138.md | 19 ++++---------------
 1 file changed, 4 insertions(+), 15 deletions(-)

diff --git a/SC1138.md b/SC1138.md
index 5a24c50..c15f1c2 100644
--- a/SC1138.md
+++ b/SC1138.md
@@ -1,30 +1,19 @@
-## Shells are space sensitive. Use `< <(cmd)`, not `<< (cmd)`.
+## Remove spaces between (( in arithmetic for loop.
 
 ### Problematic code:
 
 ```sh
-while read -r line
-do
-  echo "You said: $line"
-done <<(cmd)
+for( (i=0; i<10; i++) ); do echo $i; done
 ```
 
 ### Correct code:
 
 ```sh
-while read -r line
-do
-  echo "You said: $line"
-done < <(cmd)
+for((i=0; i<10; i++)); do echo $i; done
 ```
 ### Rationale:
 
-When redirecting `<` from a process substitution `<(cmd)`, make sure there is a space between the two `<` characters as shown in the example.
-
-With a space `cmd1 < <(cmd2)`, is correctly interpreted as "run cmd1, reading stdin from cmd2, without forking for a pipeline".
-
-Without a space, `<<` is incorrectly considered a here document, and `(cmd2)` is an invalid delimiter token.
-
+ShellCheck finds arithmetic for ((;;)) expressions where (( or )) are intervening with spaces
 
 ### Exceptions: