Created SC2088 (markdown)

SC2088.md

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+## Note that ~ doesn't expand in quotes.
+
+### Problematic code:
+
+    rm "~/Desktop/$filename"
+
+### Correct code:
+
+    rm ~/"Desktop/$filename"
+
+### Rationale:
+
+Tilde does not expand to the user's home directory when it's double quoted. 
+
+To expand it, the tilde, the optional username, and its following slash should be outside of the double quotes. 
+
+These strings expand:
+
+    ~/file                    # Correct: tilde up to the slash is unquoted (as is everything else)
+    ~/"$var"                  # Correct: tilde up to the slash is unquoted
+    ~user/"hello world.txt"   # Correct: tilde up to the slash is unquoted
+
+These strings do not, leaving a literal tilde:
+
+    # Fails!
+    "~/file"                  # Wrong: tilde and slash are quoted when they shouldn't be.
+    ~"/file"                  # Wrong: slash is quoted when it shouldn't be.
+    ~user"/hello world.txt"   # Wrong: slash is quoted when it shouldn't be.
+
+### Contraindications
+
+If you don't want the tilde to be expanded, you can ignore this message.