[Qgis-developer] BUG? strpos("area",'.') doesn't work

[Matthias Kuhn]

I wonder if we should change this for QGIS 3.0 and use QString::indexOf
instead, while providing dedicated regexp functions.

What do you think, Mathieu?

Matthias

On 11/07/2016 12:26 PM, Mathieu Pellerin wrote:
> We should indicate in the function help that strpos is regexp based.
> 
> 
> On Nov 7, 2016 6:23 PM, "Matthias Kuhn" <matthias at opengis.ch
> <mailto:matthias at opengis.ch>> wrote:
> 
>     Hi,
> 
>     strpos is based on regexp, a '.' matches any character.
>     To let the engine treat a . as such you need to prefix it with a
>     double-backslash.
> 
>     strpos(to_string("area"), '\\.')
> 
>     Regards
>     Matthias
> 
> 
>     On 11/07/2016 12:07 PM, Elstermann, Mike wrote:
>     > Hi,
>     >
>     >
>     >
>     > “area” is a double-field with values e. g. 213.1234,  43215.3456, …
>     >
>     >
>     >
>     > strpos("area",'.') gives only value 1 return :-(
>     >
>     > strpos(to_string("area"),'.') gives only value 1 return  :-(
>     >
>     >
>     >
>     > This error exits only by ‘.’, other search-strings e. g. ‘12’, ‘1’, …
>     > work fine
>     >
>     >
>     >
>     > Our workarround works fine.
>     >
>     >
>     >
>     > strpos( replace( to_string( "area" ), '.', ',' ), ',' )
>     >
>     >
>     >
>     > Is this a bug with ‘.’?
>     >
>     >
>     >
>     > best regards, mikeE.
>     >
>     >
>     >
>     >
>     >
>     >
>     >
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