NightOwl888 commented on issue #632:
URL: https://github.com/apache/lucenenet/issues/632#issuecomment-1100187973
What datatype is `{input}`?
I suspect you might be having parse issues due to the culture of the current
thread in your application, which may be formatting `{input}` in an unexpected
way. You may need to use
[`FormattableString.Invariant()`](https://docs.microsoft.com/en-us/dotnet/api/system.formattablestring.invariant?view=net-6.0).
Note also that the parsing may be failing because a new `QueryParser`
instance uses the culture of the current thread by default and you may need to
change the culture.
```c#
var parser = new MultiFieldQueryParser(LuceneVersion.LUCENE_48, new string[]
{ "foo", "bar" }, analyzer)
{
Locale = CultureInfo.InvariantCulture
};
```
Whatever the case, you should be able to debug what is happening by
recording the culture and value to be parsed during a failure and then you
should reproduce the issue in a debug environment so you can step through to
debug. Note that you can [enable Source
Link](https://lucenenet.apache.org/docs/4.8.0-beta00016/api/core/source-stepping.html)
on 4.8.0-beta00016 so you can step into the QueryParser code also.
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