RE: patch for Dired second header line info

[Drew Adams]

> >     The tooltip also helps:
> > 
> >     "Files shown, total files in dir, Kbytes used in dir, 
> >     Kbytes available on disk [RET, mouse-2: more info]"
> > 
> > Each number should have its own tooltip which explains that number
> > and not the others.
> 
> Sorry; I don't agree. The meanings of the numbers are related 
> (similar), at
> least in pairs. Four separate tooltips would be more an 
> annoyance than a
> help, because the similarities and differences can't be 
> grasped without a
> silly back-and-forth:
> 
> 420: Number of files and subdirectories currently shown in directory
> 
> 694: Number of files and subdirectories in directory, 
> including hidden ones
> 
> 19646: Kbytes used in directory
> 
> 56456000: Kbytes available (free) on disk
> 
> To understand 420 or 694, for instance, you would need to go 
> back and forth between their tooltips, trying to remember what the 
> non-displayed tooltip said while reading the displayed one, and
> comparing them mentally, in order to grasp the difference.
> 
> Two tooltips, for the two pairs, might be reasonable, however.
> 
> In any case, change it however you like.

1. OK, attached is a patch that does what I suggested (two tooltips, not 1
or 4).

2. The patch also fixes the problem of not updating when you perform update
operations, such as add a file or directory.

However, there remains a case where updating does not refresh the info line:
file deletion. For some reason, `dired-after-readin-hook' is not run when
you delete files.

Is that perhaps a dired bug, or is it by design?
`dired-internal-do-deletions' is called whether you flag a file and then use
`x' or you mark it and then use `D'. Should `dired-internal-do-deletions'
run the hook? 

HTH.

files-2008-03-04a.patch
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ls-lisp-2008-03-04a.patch
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