# Functions
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Debug prints formatted debug messages to standard error if the DEBUG environment variable is set to "1".
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FindExecutable searches for an executable file in the specified directory.
GetEnvsWithFallback retrieves the value of the specified environment variables, checking both uppercase and lowercase versions of the keys.
检查文件是否存在.
IsSimplifiedChinese checks if the current language is Simplified Chinese.
LoopUpFile searches for a file with the specified name starting from the given root directory.