On Thursday 19 March 2009 07:53:27 Denys Vlasenko wrote:
> On Thu, Mar 19, 2009 at 5:48 AM, Mike Frysinger wrote:
> > On Thursday 19 March 2009 00:07:55 Denys Vlasenko wrote:
> >> On Tuesday 17 March 2009 16:56, Michal Simek wrote:
> >> > I look at shell folder and there is msh patch for function support.
> >> > There is on the top comment that is buggy. What is buggy?
> >> >
> >> > Maybe I will have a time to clean it.
> >>
> >> hush code is cleaner (IMO), and it even has tiny rudiment
> >> of function handling (so far commented out).
> >>
> >> The easiest way is to remember function body verbatim
> >> as a string, and parse + execute it at the call site.
> >> This is easy because similar code already exists -
> >> the code which handles `cmd param param` thing.
> >>
> >> Harder part would be to implement "remember function body
> >> verbatim as a string", you need to parse it
> >> in order to find which one of "}" tokens
> >> is an end of function. This code also exists,
> >> it is needed to handle { cmd; cmd; } thing,
> >> but it does not save the source string, it produces
> >> a parsed tree. You can try remembering that tree instead,
> >> but there was a reason why this may not work
> >> (I forgot what exastly). Also, the tree will
> >> for sure be _bigger_ than source string.
> >
> > what's the nommu status of hush ? nommu is the only reason msh lives on.
>
> hush is working on NOMMU.you dont happen to know off hand feature parity between the two ? msh doesnt support a whole lot, but it'd be annoying if one of those things were missing in hush. i'll switch the Blackfin dist to hush after our release (in the process of freezing/making), so we'll get some testing there ... > NOMMU situation is very simple: the only applet which is > completely off-limits for NOMMU is ash. yes, but there are sub-features which are no go's atm. job support (obviously) and sub shells (not so obvious depending on the code). -mike
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