From mboxrd@z Thu Jan  1 00:00:00 1970
From: Lawrence Mitchell <wence@gmx.li>
Subject: Re: Table formula not returning an error
Date: Fri, 07 Oct 2011 10:09:37 +0100
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Sebastien Vauban wrote:

[...]

> But I'm surprised I did not see any error reported.

This is a feature of org-hh:mm-string-to-minutes:

| Convert a string H:MM to a number of minutes.
| If the string is just a number, interpret it as minutes.
| In fact, the first hh:mm or number in the string will be taken,
| there can be extra stuff in the string.
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| If no number is found, the return value is 0.

It's arguable that this is the best choice, but it is one.

Lawrence
-- 
Lawrence Mitchell <wence@gmx.li>