Expanded on how to use lastpipe

SC2031.md

@@ -18,9 +18,19 @@ n=0
 while read i; do (( n+=i )); done < <(printf "%s\n" {1..10})
 echo $n
 ```
-
 In `sh`, a temp file (better if fifo or fd) can be used instead of process substitution. And if it's acceptable to do it with waiting, try Here Documents.
 
+
+With Bash 4.2+ you can also use `shopt -s lastpipe` which will change the pipe behaviour to be similar to Ksh and Zsh (see Rationale below) [as long as job control is not active](https://www.gnu.org/software/bash/manual/html_node/The-Shopt-Builtin.html) (e.g. inside a script):
+```bash
+#!/usr/bin/env bash
+shopt -s lastpipe
+n=0
+printf "%s\n" {1..10} | while read i; do (( n+=i )); done
+echo $n
+```
+
+
 ### Rationale:
 
 Variables set in subshells are not available outside the subshell. This is a wide topic, and better described on the [Wooledge Bash Wiki](http://mywiki.wooledge.org/BashFAQ/024).
@@ -30,8 +40,8 @@ Here are some constructs that cause subshells (shellcheck may not warn about all
 Pipelines:
 
 ```sh
-subshell1 | subshell2 | subshell3    # Bash, Dash, Ash
+subshell1 | subshell2 | subshell3    # Dash, Ash, Bash (default)
-subshell1 | subshell2 | regular      # Ksh, Zsh
+subshell1 | subshell2 | regular      # Ksh, Zsh, Bash (with lastpipe=on and no job control)
 ```
 
 Command substitution: