Arg::default_missing_value_os
default_missing_value_os
Section titled “default_missing_value_os ”Value for the argument when the flag is present but no value is specified.
Example
Section titled “Example”name = "prog"[args]color = { long = "color", value-name = "COLOR", value-parser = ["always", "auto", "never"], default-value = "auto", num-args = "optional", require-equals = true, default-missing-value-os = "always", help = "Specify WHEN to colorize output." }
name: progargs: color: long: color value-name: COLOR value-parser: - always - auto - never default-value: auto num-args: optional require-equals: true default-missing-value-os: always help: Specify WHEN to colorize output.
{ "name": "prog", "args": { "color": { "long": "color", "value-name": "COLOR", "value-parser": [ "always", "auto", "never" ], "default-value": "auto", "num-args": "optional", "require-equals": true, "default-missing-value-os": "always", "help": "Specify WHEN to colorize output." } }}
prog --color
Output
Section titled “Output”claptrap_color='always'