assignment-in-condition

Flag an assignment (<-, =, <<-, :=) used as the direct condition of an if/while. The bare = form (often a == typo) is autofixed to ==; the others are reported without a fix.

= where == was meant:

if (x = 5) print(x)

warning: assignment-in-condition
 --> example.R:1:5
  |
1 | if (x = 5) print(x)
  |     ^^^^^ assignment used as a condition; did you mean `==`?
  = help: Replace `=` with `==` or move the assignment out.

After applying the fix:

if (x == 5) print(x)