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+## This is a unicode quote. Delete and retype it (or quote to make literal).
+
+### Problematic code:
+
+```sh
+echo 'hello world’
+```
+
+### Correct code:
+
+```sh
+echo 'hello world'
+```
+
+### Rationale:
+
+Some software, like OS X, Word and WordPress, may automatically replace your regular quotes with slanted Unicode quotes. The shell does not recognize these quotes and will not respect them.
+
+In this case, you have slanted single quotes in a single quoted string. Try deleting and retyping them, and/or disable “smart quotes” in your editor or OS.
+
+### Exceptions
+
+If you want to use literal slanted single quotes for typographic reasons, you can put them in double quotes to make ShellCheck ignore them:
+
+```sh
+printf "Warning: ‘wakeonlan’ is not installed.\\n"
+```
+
+You can also just [[ignore]] this warning.
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