Created SC2240 (markdown)

SC2240.md

@@ -0,0 +1,30 @@
+## The dot command does not support arguments in sh/dash. Set them as variables.
+
+### Problematic code:
+
+```sh
+#!/bin/sh
+. include/myscript example.com 80
+```
+
+### Correct code:
+
+```sh
+#!/bin/sh
+host=example.com port=80 . include/myscript 
+```
+### Rationale:
+
+In Bash and Ksh, you can use `. myscript arg1 arg2..` to set `$1` and `$2` in the sourced script.
+
+This is not the case in Dash, where any additional arguments are ignored, or in POSIX sh where the behavior is unspecified.
+
+Instead, assign arguments to variables and rewrite the sourced script to read from them.
+
+### Exceptions:
+
+None.
+
+### Related resources:
+
+* Help by adding links to BashFAQ, StackOverflow, man pages, POSIX, etc!