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Merge pull request #4604 from vieux/improve_deprecation_warning_flags

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improve deprecation message
This commit is contained in:
Michael Crosby 2014-03-12 10:18:49 -07:00
commit 63dee4ebc4
2 changed files with 15 additions and 3 deletions
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3
pkg/mflag/example/example.go
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@ -13,7 +13,8 @@ var (
func init() {
flag.Bool([]string{"#hp", "#-halp"}, false, "display the halp")
flag.BoolVar(&b, []string{"b"}, false, "a simple bool")
flag.BoolVar(&b, []string{"b", "#bal", "#bol", "-bal"}, false, "a simple bool")
flag.BoolVar(&b, []string{"g", "#gil"}, false, "a simple bool")
flag.BoolVar(&b2, []string{"#-bool"}, false, "a simple bool")
flag.IntVar(&i, []string{"-integer", "-number"}, -1, "a simple integer")
flag.StringVar(&str, []string{"s", "#hidden", "-string"}, "", "a simple string") //-s -hidden and --string will work, but -hidden won't be in the usage

13
pkg/mflag/flag.go
View file

@ -820,11 +820,22 @@ func (f *FlagSet) parseOne() (bool, string, error) {
f.actual = make(map[string]*Flag)
}
f.actual[name] = flag
for _, n := range flag.Names {
for i, n := range flag.Names {
if n == fmt.Sprintf("#%s", name) {
replacement := ""
for j := i; j < len(flag.Names); j++ {
if flag.Names[j][0] != '#' {
replacement = flag.Names[j]
break
}
}
if replacement != "" {
fmt.Fprintf(f.out(), "Warning: '-%s' is deprecated, it will be replaced by '-%s' soon. See usage.\n", name, replacement)
} else {
fmt.Fprintf(f.out(), "Warning: '-%s' is deprecated, it will be removed soon. See usage.\n", name)
}
}
}
return true, "", nil
}