_scan_text applied `public:` / `private:` / `protected:` only inside
handle_statement, which the `{` branch skipped whenever the statement opened
a nested enum, struct or class. So `public:\n typedef enum { ... }` -- the
first thing in AccelStepper's class body, and a common idiom -- took the enum
branch, the label was never seen, the class stayed in its default private
access, and every method after the enum was dropped. AccelStepper shipped 4
of its public methods; DallasTemperature, SoftWire, MFRC522_I2C, RTCZero
shipped none.
Labels are now consumed before the branch. Rescanned all 1,125 entries of
the production library cache: 82 libraries gain members (+1,532 total,
DallasTemperature 0 -> 57), and the 20 that "lose" one or two were leaking
private/protected members past the old check (PMS::loop is under private:,
hd44780::waitReady under protected:) -- precision, not regression.
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