patch 8.2.4427: getchar() may return modifiers if no character is available Commit: https://github.com/vim/vim/commit/ad6c45f62558e03d3e3a927b3fe4dbaf30a36bef Author: zeertzjq <zeertzjq@outlook.com> Date: Sun Feb 20 19:05:10 2022 +0000 patch 8.2.4427: getchar() may return modifiers if no character is available Problem: getchar() may return modifiers if no character is available. Solution: Do not process modifiers when there is no character. (closes https://github.com/vim/vim/issues/9806)

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