From Newsgroup: gnu.emacs.help

At a directory with only jpeg images, the "messages" buffer showed all
the useful image attributes of one of the images.
I must have leaned on a key.
I haven't been able to work out what that was.
(trying every lowercase letter key didn't find it)

I got all the information I would want from the "imagemagick"
"identify" tool.
Example of "identify" on one of the images
IMG_84781.jpg JPEG 800x600 800x600+0+0 8-bit sRGB 134009B 0.010u 0:00.009
There was more than that in the emacs message buffer...

Would love to know what that set of functions and that particular key
is.
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From Newsgroup: gnu.emacs.help

On Mon, 23 May 2022 18:30:08 +0100, Richard Smith <null@void.com> wrote:

I must have leaned on a key.

Next time, type C-h l (view lossage) and it will show the last keys that
were typed.

Having said that, it sounds like a nice key that you accidentally pressed...

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From Newsgroup: gnu.emacs.help

Richard Smith <null@void.com> writes:

At a directory with only jpeg images, the "messages" buffer showed all
the useful image attributes of one of the images.
I must have leaned on a key.
I haven't been able to work out what that was.
(trying every lowercase letter key didn't find it)

In my (almost default) setup, typing y (bound to dired-show-file-type)
shows my a reasonable summary of the image type:

pc180009.jpg: JPEG image data, Exif standard: [TIFF image data,
little-endian, direntries=15, description=OLYMPUS DIGITAL CAMERA ,
manufacturer=OLYMPUS CORPORATION , model=E-M10MarkII ,
orientation=upper-left, xresolution=1004, yresolution=1012,
resolutionunit=2, software=Version 1.2 , datetime=2018:12:18
20:58:57], baseline, precision 8, 4608x3456, components 3

Maybe that's what you saw?
--
Ben.
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From Newsgroup: gnu.emacs.help

Ben <ben.usenet@bsb.me.uk> writes:

Richard Smith <null@void.com> writes:

At a directory with only jpeg images, the "messages" buffer showed all
the useful image attributes of one of the images.
I must have leaned on a key.
I haven't been able to work out what that was.
(trying every lowercase letter key didn't find it)

In my (almost default) setup, typing y (bound to dired-show-file-type)
shows my a reasonable summary of the image type:

pc180009.jpg: JPEG image data, Exif standard: [TIFF image data,
little-endian, direntries=15, description=OLYMPUS DIGITAL CAMERA ,
manufacturer=OLYMPUS CORPORATION , model=E-M10MarkII ,
orientation=upper-left, xresolution=1004, yresolution=1012,
resolutionunit=2, software=Version 1.2 , datetime=2018:12:18
20:58:57], baseline, precision 8, 4608x3456, components 3

Maybe that's what you saw?

--
Ben.

YES!

That's it!
I missed that despite thinking I'd tried avery letter of the alphabet.

Mega thanks.

Emacs is so full of delights and I wish I had some systematic way of investigating if for any type of application there are features one
would want.
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From Newsgroup: gnu.emacs.help

That's it!
I missed that despite thinking I'd tried avery letter of the alphabet.

I must admit I only investigated the C-t series of keys :)

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From Newsgroup: gnu.emacs.help

USEnet <jvromans@squirrel.nl> writes:

That's it!
I missed that despite thinking I'd tried avery letter of the alphabet.

I must admit I only investigated the C-t series of keys :)

I did not know this before hand so, for future reference, what I did was
I got help for the major mode (h) and I planned to search for words like "show", "display", "details" and "type" but found this command on the
first search.
--
Ben.
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From Newsgroup: gnu.emacs.help

To be honest, I expected dired-show-file-type to give only trivial
information (e.g. "JPEG image file"). It is good to know that it does a lot more.

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From Newsgroup: gnu.emacs.help

Ben <ben.usenet@bsb.me.uk> writes:

...

I did not know this before hand so, for future reference, what I did was
I got help for the major mode (h) and I planned to search for words like "show", "display", "details" and "type" but found this command on the
first search.

--
Ben.

Noting the strategy. Good hint for future like circumstances.
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From Newsgroup: gnu.emacs.help

USEnet <jvromans@squirrel.nl> writes:

To be honest, I expected dired-show-file-type to give only trivial information (e.g. "JPEG image file"). It is good to know that it does a lot more.

Yes, that was my first guess and I would not be surprised if that's
still the case on some systems. It turns out that Emacs just runs
file(1) and reports the output. The file utility has got more and more sophisticated over the years and it now report all the stuff I posted.
--
Ben.
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