a number in a multiline log message is mistaken for a timestamp

[tstack]

Problem

A number in a log message can be mistaken for a timestamp, which will mess up log merging behavior.

How to reproduce

Load the following log snippet into tl:

Feb 08 09:50:05 Foo-MacBook-Air loginwindow[588]: IASGetCurrentInstallPhaseList: phases = (
	        {
	        ConclusionDelay = 0;
	        InstallPhase = "IOKit Boot";
	        InstallPhaseActualPercentageKey = "21.77734375";
	        InstallPhasePercentageKey = 22;
	    },
	        {
	        ConclusionDelay = 0;
	        InstallPhase = "Boot-Time Installation";
	        InstallPhaseActualPercentageKey = "69.01998901367188";
	        InstallPhasePercentageKey = 69;
	    }
	)

Select the line with "69.01998901367188" and note that the time in the bottom right is something like "04/07/8304 22:58:38". This causes problems when merging log files because these lines show up at the bottom of the merged logs.

Details

Since the TimestampScanner is looking for timestamps anywhere in a log line, a format like the following one is going to mistakenly pick up logged data and treat it as a timestamp:

https://github.com/Textualize/toolong/blob/9fe54a6bcd6bcc2b1066c762057b0de812dcd155/src/toolong/timestamps.py#L92-L93