Created SC2077 (markdown)

SC2077.md

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+## You need spaces around the comparison operator.
+
+### Problematic code:
+
+    [[ 0=1 ]]
+
+### Correct code:
+
+    [[ 0 = 1 ]]
+
+### Rationale:
+
+`[[ 0 = 1 ]]` means "check if 0 and 1 are equal".
+ 
+`[[ str ]]` is short form for `[[ -n str ]]`, and means "check if `str` is non-empty". It doesn't matter if `str` happens to contain `0=1`. 
+
+Always use spaces around the comparison operator in `[..]` and `[[..]]`, otherwise it won't be recognized as an operator.
+
+### Contraindications
+
+None.