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bug#23809: 24.5; Positive argument to 'posn-at-point' throws erros as be


From: Eli Zaretskii
Subject: bug#23809: 24.5; Positive argument to 'posn-at-point' throws erros as being negative
Date: Tue, 21 Jun 2016 18:15:16 +0300

> Date: Tue, 21 Jun 2016 15:07:57 +0200
> From: martin rudalics <address@hidden>
> CC: address@hidden
> 
>  > Sounds like a duplicate of bug #21732.
>  >
>  >> With these steps, I get this backtrace:
>  >>
>  >>    Debugger entered--Lisp error: (wrong-type-argument wholenump -14)
>  >>      posn-at-point(619194 #)
> 
> Without further forensics we could "fix" both bugs using the attached
> patch.  WDYT?

I don't like sweeping problems under the carpet.  We should understand
how come we get negative pixel coordinates in these cases, it's most
likely some bug in pos_visible_p or somesuch.





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