PWS :reload

PWS :reload

[zzapper]

Peter,
I'd like a version of your excellent reload script which doesn't fail if the script has just been
created thx.
.


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Re: PWS :reload

[Peter Stephenson]

zzapper wrote:
> Peter,
> I'd like a version of your excellent reload script which doesn't fail if the 
> script has just been
> created thx.

It's for functions, not scripts.  I don't know what feature you're
talking about; it works fine if the function is already marked for
autoloading.  Do you mean you want to be able either to autoload or
reload with the same function?  You can use "autoload foo; reload foo".

-- 
Peter Stephenson <pws@csr.com>                  Software Engineer
CSR PLC, Churchill House, Cambridge Business Park, Cowley Road
Cambridge, CB4 0WZ, UK                          Tel: +44 (0)1223 692070


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Re: PWS :reload

[zzapper]

On Thu, 12 May 2005 14:02:03 +0100,  wrote:

>zzapper wrote:
>> Peter,
>> I'd like a version of your excellent reload script which doesn't fail if the 
>> script has just been
>> created thx.
>
>It's for functions, not scripts.  I don't know what feature you're
>talking about; it works fine if the function is already marked for
>autoloading.  Do you mean you want to be able either to autoload or
>reload with the same function?  You can use "autoload foo; reload foo".

P,
I never remember that I need to say autoload the first time of use that's all.


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Re: PWS :reload

[Peter Stephenson]

zzapper wrote:
> I never remember that I need to say autoload the first time of use that's all
> .

You might want to ignore the result of unfunction.

reload() {
while (( $# )); do
  unfunction $1 2>/dev/null
  autoload $1
  shift
done
}

or something.

pws


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Re: PWS :reload

[zzapper]

On Thu, 12 May 2005 15:48:28 +0100,  wrote:

>zzapper wrote:
>> I never remember that I need to say autoload the first time of use that's all
>> .
>
>You might want to ignore the result of unfunction.
>
>reload() {
>while (( $# )); do
>  unfunction $1 2>/dev/null
>  autoload $1
>  shift
>done
>}
>
Can I have a warning that the function wasn't already loaded?

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Re: PWS :reload

[Bart Schaefer]

On May 12,  5:00pm, zzapper wrote:
}
} >reload() {
} >while (( $# )); do
} >  unfunction $1 2>/dev/null
} >  autoload $1
} >  shift
} >done
} >}
} >
} Can I have a warning that the function wasn't already loaded?

We're venturing into the realm of "you should be able to do this yourself."

E.g., just take out the 2>/dev/null

Or:

reload() {
while (( $# )); do
  unfunction $1 2>/dev/null || print -u2 "$1 loading for the first time"
  autoload $1
  shift
done

Or whatever ...

Re: PWS :reload

[zzapper]

On Thu, 12 May 2005 17:05:51 +0000,  Bart wrote:

>
>We're venturing into the realm of "you should be able to do this yourself."
Richtig aber,  as reload is I believe of general interest I though this way we'd get the best
version!

function reload() {
# reload your changed autoloaded function(s)
if (( $# == 0 ));
then
    print "Reload what?" >&2
    return 1
fi
while (( $# )); do
    unfunction $1 2>/dev/null || print -u2 "$1 loading for the first time"
    autoload $1
    shift
done
}
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Re: echo $fred:s/str1/str2/

[Peter Stephenson]

zzapper wrote:
> echo $fred:s/bu/hhh/
> 
> I don't seem to be able to use regexp's in the substitute tho' it's suggested
>  that it's possible in
> the doc

You can't use patterns with that form, which is the history modifier
syntax.  You can use patterns with this form:

echo ${fred/bu/hhh}

A useful trick with this form if you need to manipulate the matched
part is to use the (#m) extended globbing flag and the $MATCH variable:

% fred="hello harry"
% print ${fred//(#m)[aeiou]/${(U)MATCH}}
hEllO hArry

pws


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Re: echo $fred:s/str1/str2/

[zzapper]

On Tue, 17 May 2005 14:00:18 +0100,  wrote:


>
>You can't use patterns with that form, which is the history modifier
>syntax.  You can use patterns with this form:
>
>echo ${fred/bu/hhh}
>
Peter,
I was expecting to use PCRE but it seems to only allow simplified patterns

echo ${fred/ket*ll/yyy} 

Where can I find the rules?
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Re: echo $fred:s/str1/str2/

[Peter Stephenson]

zzapper wrote:
> On Tue, 17 May 2005 14:00:18 +0100,  wrote:
> >You can't use patterns with that form, which is the history modifier
> >syntax.  You can use patterns with this form:
> >
> >echo ${fred/bu/hhh}
> >
> Peter,
> I was expecting to use PCRE but it seems to only allow simplified patterns
> 
> echo ${fred/ket*ll/yyy} 
> 
> Where can I find the rules?

They are standard shell globbing patterns, as described in the "Filename
Generation" section of the zshexpn manual.  This is the only form of
pattern matching the standard shell syntax knows about.

You certainly shouldn't be expecting to use PCRE.  That's never part of
standard shell syntax.  It's only invoked in a few particular cases
loaded explicitly with the zsh/pcre module.

-- 
Peter Stephenson <pws@csr.com>                  Software Engineer
CSR PLC, Churchill House, Cambridge Business Park, Cowley Road
Cambridge, CB4 0WZ, UK                          Tel: +44 (0)1223 692070


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Re: echo $fred:s/str1/str2/

[zzapper]

On Tue, 17 May 2005 17:08:53 +0100,  wrote:

>zzapper wrote:
>> On Tue, 17 May 2005 14:00:18 +0100,  wrote:
>> >You can't use patterns with that form, which is the history modifier
>> >syntax.  You can use patterns with this form:
>> >
>> >echo ${fred/bu/hhh}
>> >
>> Peter,
>> I was expecting to use PCRE but it seems to only allow simplified patterns
>> 
>> echo ${fred/ket*ll/yyy} 
>> 
>> Where can I find the rules?
>
>They are standard shell globbing patterns, as described in the "Filename
>Generation" section of the zshexpn manual.  This is the only form of
>pattern matching the standard shell syntax knows about.
>
>You certainly shouldn't be expecting to use PCRE.  That's never part of
>standard shell syntax.  It's only invoked in a few particular cases
>loaded explicitly with the zsh/pcre module.
thx found the right part of help now

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echo $fred:s/str1/str2/

[zzapper]

Hi,

echo $fred:s/bu/hhh/

I don't seem to be able to use regexp's in the substitute tho' it's suggested that it's possible in
the doc

Tell me how wrong I am!?1


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