From d55ed71e50621fbbacf3a7ba4d296a7b46b0c06d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ville=20Skytt=C3=A4?= <ville.skytta@iki.fi>
Date: Mon, 15 Jun 2020 22:32:35 +0300
Subject: [PATCH] Note bash temp file and posix mode caveats, add lastpipe
 recipes

---
 SC2207.md | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/SC2207.md b/SC2207.md
index d5b7cae..dbaf47a 100644
--- a/SC2207.md
+++ b/SC2207.md
@@ -11,14 +11,14 @@ array=( $(mycommand) )
 If it outputs multiple lines, each of which should be an element:
 
 ```sh
-# For bash 4.x
+# For bash 4.x, must not be in posix mode, may use temporary files
 mapfile -t array < <(mycommand)
 
-# For bash 3.x+
+# For bash 3.x+, must not be in posix mode, may use temporary files
 array=()
 while IFS='' read -r line; do array+=("$line"); done < <(mycommand)
 
-# For ksh
+# For ksh, and bash 4.2+ with the lastpipe option enabled (may require disabling monitor mode)
 array=()
 mycommand | while IFS="" read -r line; do array+=("$line"); done
 ```
@@ -26,9 +26,13 @@ mycommand | while IFS="" read -r line; do array+=("$line"); done
 If it outputs a line with multiple words (separated by spaces), other delimiters can be chosen with IFS, each of which should be an element:
 
 ```sh
-# For bash
+# For bash, uses temporary files
 IFS=" " read -r -a array <<< "$(mycommand)"
 
+# For bash 4.2+ with the lastpipe option enabled (may require disabling monitor mode)
+array=()
+mycommand | IFS=" " read -r -a array
+
 # For ksh
 IFS=" " read -r -A array <<< "$(mycommand)"
 ```