In a previous issue (now closed) I noted that context names may overlap with variable names. The clash with global variables has been repaired, but they can still be the same as local names:
f: func[a [integer!]][a: context [b: 1]]
-= Red/System Compiler =-
Compiling tests/mytest.reds ...
...compilation time: 703 ms
...linking time: 953 ms
...output file size: 15360 bytes
FIX: #291 (Context names may still overlap with local variable names/…