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helpful error message when flag is missing values #310

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merged 2 commits into from Jun 11, 2022

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pyqlsa
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@pyqlsa pyqlsa commented Jun 11, 2022

Intended to address #277.

mapper.go Outdated
var childScanner *Scanner
if ctx.Value.Flag != nil {
t := ctx.Scan.Pop()
// If decoding a flag, we need an argument.
if t.IsEOL() {
return errors.New("unexpected EOL")
return fmt.Errorf("missing argument: expecting \"<key>=<value>%c...\"", mapsep)
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This is awesome thank you, just two minor things.

  1. Please replace "argument" with "value", as "argument" has an existing, different, meaning.
  2. Please change "value: expecting" to "value, expecting"

@alecthomas alecthomas merged commit edc47eb into alecthomas:master Jun 11, 2022
@alecthomas
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Lovely, thank you!

@pyqlsa pyqlsa deleted the sliske/msgs branch June 12, 2022 01:24
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2 participants