From aa727b8868b428a6b75e0d48a854be65242b257c Mon Sep 17 00:00:00 2001
From: Trygve Laugstøl <trygvis@inamo.no>
Date: Sun, 10 Nov 2013 15:25:23 +0100
Subject: o Automatically fetching Bats if not installed.

---
 STYLE-GUIDE.txt | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'STYLE-GUIDE.txt')

diff --git a/STYLE-GUIDE.txt b/STYLE-GUIDE.txt
index 77dce24..4eab7c2 100644
--- a/STYLE-GUIDE.txt
+++ b/STYLE-GUIDE.txt
@@ -43,8 +43,21 @@ usage_text() {
 Executing Commands
 ==================
 
+When chaining commands look at `pipefail`.
+
 * http://unix.stackexchange.com/q/23026
 
+If you want to fail this shell if a sub-shell fails, use this form:
+
+----------------------------------------------------------------------
+ENV=$(app conf get app.env) || false
+----------------------------------------------------------------------
+
+The sub-shell will exit with a non-zero exit code, but even with `-e`
+set bash won't exit the current shell.
+
+See also http://www.fvue.nl/wiki/Bash:_Error_handling.
+
 Parsing options
 ===============
 
-- 
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