From a01aed0b1726cb105d2554b6f21bbda6a8519330 Mon Sep 17 00:00:00 2001
From: Vidar Holen <vidar@vidarholen.net>
Date: Sun, 6 Dec 2020 21:24:55 -0800
Subject: [PATCH] Created SC1139 (markdown)

---
 SC1139.md | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 SC1139.md

diff --git a/SC1139.md b/SC1139.md
new file mode 100644
index 0000000..dbed380
--- /dev/null
+++ b/SC1139.md
@@ -0,0 +1,36 @@
+## Use || instead of '-o' between test commands.
+
+And variations, like "Use `&&` instead of `and`".
+
+### Problematic code:
+
+```sh
+if [ "$1" = "-v" ] -o [ -n "$VERBOSE" ]
+then
+  echo "Verbose log"
+fi
+```
+
+### Correct code:
+
+```sh
+if [ "$1" = "-v" ] || [ -n "$VERBOSE" ]
+then
+  echo "Verbose log"
+fi
+```
+### Rationale:
+
+You have a `[ .. ]` or `[[ .. ]]` test expression followed by `-o`/`-a` (or by Python-style `or`/`and`).
+
+`-o` and `-a` work *inside* `[ .. ]`, but they do not work *between* them. The Python operators `or` and `and` are never recognized in Bash.
+
+To join two separate test expressions, instead use `||` for "logical OR", or `&&` for "logical AND".
+
+### Exceptions:
+
+None
+
+### Related resources:
+
+* Help by adding links to BashFAQ, StackOverflow, man pages, POSIX, etc!
\ No newline at end of file