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Posted to dev@httpd.apache.org by Nick Gearls <ni...@gmail.com> on 2009/11/19 18:12:44 UTC

mod_substitute strange behaviour

I'm not sure this is really desired:

1. More or less normal/abnormal case:
 s/123/abc123def/ -> "*123*" becomes "abcabc123defdef"
Substitution is made twice (why not 3 times, 4 times,... ?).
Flatening the bucket or not does not changing anything.
I suppose we could argue that the author has to ensure that there is no 
cycle, although I find this a major problem.
Can't we add a flag to replace only once? That would be neat.

2. This one is really difficult to understand:
 s/123/abcxxxdef/
 s/xxx/123/  -> "*123*" becomes "abcabc123defdef", again
By issuing to successive commands, I cannot understand why the first one 
is executed again after the second one ?!?
Is this an expected behaviour?

 
Thanks,

Nick

Re: mod_substitute strange behaviour

Posted by Nick Gearls <ni...@gmail.com>.
Last version from trunk


Jim Jagielski wrote:
> On Nov 19, 2009, at 12:12 PM, Nick Gearls wrote:
> 
>> I'm not sure this is really desired:
>>
>> 1. More or less normal/abnormal case:
>> s/123/abc123def/ -> "*123*" becomes "abcabc123defdef"
>> Substitution is made twice (why not 3 times, 4 times,... ?).
>> Flatening the bucket or not does not changing anything.
>> I suppose we could argue that the author has to ensure that there is no cycle, although I find this a major problem.
>> Can't we add a flag to replace only once? That would be neat.
>>
> 
>> 2. This one is really difficult to understand:
>> s/123/abcxxxdef/
>> s/xxx/123/  -> "*123*" becomes "abcabc123defdef", again
>> By issuing to successive commands, I cannot understand why the first one is executed again after the second one ?!?
>> Is this an expected behaviour?
>>
> 
> What version?

Re: mod_substitute strange behaviour

Posted by Jim Jagielski <ji...@jaguNET.com>.
On Nov 19, 2009, at 12:12 PM, Nick Gearls wrote:

> I'm not sure this is really desired:
> 
> 1. More or less normal/abnormal case:
> s/123/abc123def/ -> "*123*" becomes "abcabc123defdef"
> Substitution is made twice (why not 3 times, 4 times,... ?).
> Flatening the bucket or not does not changing anything.
> I suppose we could argue that the author has to ensure that there is no cycle, although I find this a major problem.
> Can't we add a flag to replace only once? That would be neat.
> 

> 2. This one is really difficult to understand:
> s/123/abcxxxdef/
> s/xxx/123/  -> "*123*" becomes "abcabc123defdef", again
> By issuing to successive commands, I cannot understand why the first one is executed again after the second one ?!?
> Is this an expected behaviour?
> 

What version?