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flags: improve error message when reading environment vars #4888
The message now includes the flag name to help the user work out what is happening. Invalid value for environment variable "RCLONE_VERSION" when setting default for --version: strconv.ParseBool: parsing "yes": invalid syntax
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@ -19,13 +19,13 @@ func setDefaultFromEnv(flags *pflag.FlagSet, name string) {
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if found {
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flag := flags.Lookup(name)
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if flag == nil {
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log.Fatalf("Couldn't find flag %q", name)
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log.Fatalf("Couldn't find flag --%q", name)
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}
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err := flag.Value.Set(newValue)
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if err != nil {
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log.Fatalf("Invalid value for environment variable %q: %v", key, err)
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log.Fatalf("Invalid value for environment variable %q when setting default for --%s: %v", key, name, err)
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}
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fs.Debugf(nil, "Set default for %q from %q to %q (%v)", name, key, newValue, flag.Value)
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fs.Debugf(nil, "Set default for --%q from %q to %q (%v)", name, key, newValue, flag.Value)
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flag.DefValue = newValue
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}
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}
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