func goodFormHead(head string, ed *Editor) bool {
if isBuiltinSpecial[head] {
return true
} else if util.DontSearch(head) {
// XXX don't stat twice
return util.IsExecutable(head) || isDir(head)
} else {
explode, ns, name := eval.ParseVariable(head)
if !explode {
switch ns {
case "":
if eval.Builtin()[eval.FnPrefix+name] != nil || ed.evaler.Global[eval.FnPrefix+name] != nil {
return true
}
case "e":
if ed.isExternal[name] {
return true
}
default:
if ed.evaler.Modules[ns] != nil && ed.evaler.Modules[ns][eval.FnPrefix+name] != nil {
return true
}
}
}
return ed.isExternal[head]
}
}
func iterateVariables(ev *eval.Evaler, ns string, f func(string)) {
if ns == "" {
for varname := range eval.Builtin() {
f(varname)
}
for varname := range ev.Global {
f(varname)
}
// TODO Include local names as well.
} else {
for varname := range ev.Modules[ns] {
f(varname)
}
}
}
func goodFormHead(head string, ed *Editor) bool {
if isBuiltinSpecial[head] {
return true
} else if util.DontSearch(head) {
// XXX don't stat twice
return util.IsExecutable(head) || isDir(head)
} else {
_, ns, head := eval.ParseVariable(head)
if ns == "" {
return ed.isExternal[head] ||
eval.Builtin()[eval.FnPrefix+head] != nil ||
ed.evaler.Global[eval.FnPrefix+head] != nil
} else {
return ed.evaler.Modules[ns] != nil &&
ed.evaler.Modules[ns][eval.FnPrefix+head] != nil
}
}
}
func iterateVariables(ev *eval.Evaler, ns string, f func(string)) {
switch ns {
case "":
for varname := range eval.Builtin() {
f(varname)
}
for varname := range ev.Global {
f(varname)
}
// TODO Include local names as well.
case "E":
for _, s := range os.Environ() {
f(s[:strings.IndexByte(s, '=')])
}
default:
// TODO Support non-module namespaces.
for varname := range ev.Modules[ns] {
f(varname)
}
}
}