The pretty printer was collapsing unsuffixed float literals (like `0.`)
with adjacent dot tokens, producing ambiguous or invalid output:
- `0. ..45.` (range) became `0...45.`
- `0. ..=360.` (inclusive range) became `0...=360.`
- `0. .to_string()` (method call) became `0..to_string()`
The fix inserts a space after an unsuffixed float literal ending with
`.` when it appears as the start expression of a range operator or the
receiver of a method call or field access, preventing the trailing dot
from merging with the following `.`, `..`, or `..=` token. This is
skipped when the expression is already parenthesized, since the closing
`)` naturally provides separation.
Signed-off-by: Andrew V. Teylu <andrew.teylu@vector.com>
Andrew V. Teylu