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Improved usage messages for default values

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mpeterv
2014-03-01 14:43:20 +04:00
parent 57f8d46ba3
commit d601f54dce
2 changed files with 27 additions and 4 deletions
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8
src/argparse.lua
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@@ -102,7 +102,7 @@ function Argument:get_arg_usage(argname)
local buf = {}
local required_argname = argname
if self._default then
if self._default and self._defmode:find "a" then
required_argname = "[" .. argname .. "]"
end
@@ -132,6 +132,12 @@ end
function Argument:get_usage()
if not self._usage then
self._usage = table.concat(self:get_arg_usage("<" .. self._name .. ">"), " ")
if self._default and self._defmode:find "c" then
if self._maxargs > 1 or (self._minargs == 1 and not self._defmode:find "a") then
self._usage = "[" .. self._usage .. "]"
end
end
end
return self._usage