[fpc-pascal] Executing external processes and codepages

[Jonas Maebe]

Michael Van Canneyt wrote on Wed, 11 May 2016:

> On Wed, 11 May 2016, Jonas Maebe wrote:
>
>>
>> Michael Van Canneyt wrote on Wed, 11 May 2016:
>>
>>> And in the case it makes an assumption of the code page, regardless of
>>> environment variables ?
>>>
>>> (don't say that doesn't happen. It does, I know a programmer that does so)
>>
>> The caller can work around such bugs by either
>> a) using the pchar version of fpexec, or
>> b) specifying the code page that this target program uses in the  
>> environment used to invoke it
>
> a) obviously
> b) As said, the target program completely ignores the environment.

b) is exactly why you have to specify the code page that this *target  
program* uses in the environment when executing it, so that the  
invoking FPC program will convert the parameters to this code page.

> I was just trying to point out that while your solution is  
> undoubtedly correct
> in the large majority of cases (let's assume 99,99%), it is not a  
> rock-hard guarantee.

I never claimed it was. I only said it is the only possible correct  
behaviour. It obviously cannot fix other broken programs, although as  
explained it is sufficiently flexible to deal with them.


Jonas