Fwd: [BUG] text-property displayed image has a center-line when the text face has underline attribute

Fwd: [BUG] text-property displayed image has a center-line when the text face has underline attribute

[Christopher M. Miles]

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Ihor Radchenko <yantar92@gmail.com> writes:

> "Christopher M. Miles" <numbchild@gmail.com> writes:
>
>> I replaced step 5 with step 6 by extracting the logic code of
>> org-link-beautify, but I found it does not have center-line. That's
>> really weird.
>> ...
>>        (put-text-property
>>         start end
>>         'display (create-image "~/Downloads/.thumbnails/3veEPJrQrV1EtpH9.png" nil nil :ascent 'center :max-height 512))
>>        (make-local-variable 'image-map)
>>        (define-key image-map (kbd "<mouse-1>") 'org-open-at-point))
>>      #+end_src
>
> On my side, the put-text-property does have center-line.
> But only when buffer is in Org mode.
> Yet, it is not Org's fault.
>
> The reason you are seeing the horizontal line is org-link face.
> org-link has underline. And the "center" line you are seeing is actually
> underline coming from the face. I'd say it is emacs bug.

Thanks very much for figuring out this issue, Ihor.

I see, I originally post this issue on Emacs-help mailing list, Eli let
me forward this thread to Org mode mailing list. Now I need to forward
to Emacs-devel mailing list.

In case the background info is missing, link original message here:

https://list.orgmode.org/87mtae2718.fsf@localhost/T/#m35d40f37fdf80f413ddb8d40e3017a6f102651e9

-- 

[ stardiviner ]
I try to make every word tell the meaning that I want to express without misunderstanding.

Blog: https://stardiviner.github.io/
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Fwd: [BUG] text-property displayed image has a center-line when the text face has underline attribute

[Christopher M. Miles]

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Ihor Radchenko <yantar92@gmail.com> writes:

> "Christopher M. Miles" <numbchild@gmail.com> writes:
>
>> I replaced step 5 with step 6 by extracting the logic code of
>> org-link-beautify, but I found it does not have center-line. That's
>> really weird.
>> ...
>>        (put-text-property
>>         start end
>>         'display (create-image "~/Downloads/.thumbnails/3veEPJrQrV1EtpH9.png" nil nil :ascent 'center :max-height 512))
>>        (make-local-variable 'image-map)
>>        (define-key image-map (kbd "<mouse-1>") 'org-open-at-point))
>>      #+end_src
>
> On my side, the put-text-property does have center-line.
> But only when buffer is in Org mode.
> Yet, it is not Org's fault.
>
> The reason you are seeing the horizontal line is org-link face.
> org-link has underline. And the "center" line you are seeing is actually
> underline coming from the face. I'd say it is emacs bug.

Thanks very much for figuring out this issue, Ihor.

I see, I originally post this issue on Emacs-help mailing list, Eli let
me forward this thread to Org mode mailing list. Now I need to forward
to Emacs-devel mailing list.

In case the background info is missing, link original message here:

https://list.orgmode.org/87mtae2718.fsf@localhost/T/#m35d40f37fdf80f413ddb8d40e3017a6f102651e9

-- 

[ stardiviner ]
I try to make every word tell the meaning that I want to express without misunderstanding.

Blog: https://stardiviner.github.io/
IRC(libera.chat, freenode): stardiviner, Matrix: stardiviner
GPG: F09F650D7D674819892591401B5DF1C95AE89AC3

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Re: Fwd: [BUG] text-property displayed image has a center-line when the text face has underline attribute

[Eli Zaretskii]

> From: "Christopher M. Miles" <numbchild@gmail.com>
> Cc: "Christopher M. Miles" <numbchild@gmail.com>, Org Mode
>  <emacs-orgmode@gnu.org>
> Date: Sun, 02 Oct 2022 15:03:26 +0800
> 
> Ihor Radchenko <yantar92@gmail.com> writes:
> 
> > "Christopher M. Miles" <numbchild@gmail.com> writes:
> >
> >> I replaced step 5 with step 6 by extracting the logic code of
> >> org-link-beautify, but I found it does not have center-line. That's
> >> really weird.
> >> ...
> >>        (put-text-property
> >>         start end
> >>         'display (create-image "~/Downloads/.thumbnails/3veEPJrQrV1EtpH9.png" nil nil :ascent 'center :max-height 512))
> >>        (make-local-variable 'image-map)
> >>        (define-key image-map (kbd "<mouse-1>") 'org-open-at-point))
> >>      #+end_src
> >
> > On my side, the put-text-property does have center-line.
> > But only when buffer is in Org mode.
> > Yet, it is not Org's fault.
> >
> > The reason you are seeing the horizontal line is org-link face.
> > org-link has underline. And the "center" line you are seeing is actually
> > underline coming from the face. I'd say it is emacs bug.
> 
> Thanks very much for figuring out this issue, Ihor.
> 
> I see, I originally post this issue on Emacs-help mailing list, Eli let
> me forward this thread to Org mode mailing list. Now I need to forward
> to Emacs-devel mailing list.
> 
> In case the background info is missing, link original message here:
> 
> https://list.orgmode.org/87mtae2718.fsf@localhost/T/#m35d40f37fdf80f413ddb8d40e3017a6f102651e9

Please report this as a bug, with "M-x report-emacs-bug", and please
include there all the details, including the recipe to reproduce the
issue.

Thanks.

[CLOSED] text-property displayed image has a center-line when the text face has underline attribute

[Christopher M. Miles]

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I hate to rewrite those steps more than 3 times. But I also know Emacs
contributors should not be forced to fix bug for me. Also I can't fix
this bug by myself. So I think it's not a bug, I can tolerate this
center line. Maybe I mastered skill for modify code in Emacs, I might
come back to fix this bug by myself. But now, let me close it. I'm not
hating anybody, just hate this process. Thanks for checking out.

Eli Zaretskii <eliz@gnu.org> writes:

>> From: "Christopher M. Miles" <numbchild@gmail.com>
>> Cc: "Christopher M. Miles" <numbchild@gmail.com>, Org Mode
>>  <emacs-orgmode@gnu.org>
>> Date: Sun, 02 Oct 2022 15:03:26 +0800
>> 
>> Ihor Radchenko <yantar92@gmail.com> writes:
>> 
>> > "Christopher M. Miles" <numbchild@gmail.com> writes:
>> >
>> >> I replaced step 5 with step 6 by extracting the logic code of
>> >> org-link-beautify, but I found it does not have center-line. That's
>> >> really weird.
>> >> ...
>> >>        (put-text-property
>> >>         start end
>> >>         'display (create-image "~/Downloads/.thumbnails/3veEPJrQrV1EtpH9.png" nil nil :ascent 'center :max-height 512))
>> >>        (make-local-variable 'image-map)
>> >>        (define-key image-map (kbd "<mouse-1>") 'org-open-at-point))
>> >>      #+end_src
>> >
>> > On my side, the put-text-property does have center-line.
>> > But only when buffer is in Org mode.
>> > Yet, it is not Org's fault.
>> >
>> > The reason you are seeing the horizontal line is org-link face.
>> > org-link has underline. And the "center" line you are seeing is actually
>> > underline coming from the face. I'd say it is emacs bug.
>> 
>> Thanks very much for figuring out this issue, Ihor.
>> 
>> I see, I originally post this issue on Emacs-help mailing list, Eli let
>> me forward this thread to Org mode mailing list. Now I need to forward
>> to Emacs-devel mailing list.
>> 
>> In case the background info is missing, link original message here:
>> 
>> https://list.orgmode.org/87mtae2718.fsf@localhost/T/#m35d40f37fdf80f413ddb8d40e3017a6f102651e9
>
> Please report this as a bug, with "M-x report-emacs-bug", and please
> include there all the details, including the recipe to reproduce the
> issue.
>
> Thanks.


-- 

[ stardiviner ]
I try to make every word tell the meaning that I want to express without misunderstanding.

Blog: https://stardiviner.github.io/
IRC(libera.chat, freenode): stardiviner, Matrix: stardiviner
GPG: F09F650D7D674819892591401B5DF1C95AE89AC3

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[CLOSED] text-property displayed image has a center-line when the text face has underline attribute

[Christopher M. Miles]

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I hate to rewrite those steps more than 3 times. But I also know Emacs
contributors should not be forced to fix bug for me. Also I can't fix
this bug by myself. So I think it's not a bug, I can tolerate this
center line. Maybe I mastered skill for modify code in Emacs, I might
come back to fix this bug by myself. But now, let me close it. I'm not
hating anybody, just hate this process. Thanks for checking out.

Eli Zaretskii <eliz@gnu.org> writes:

>> From: "Christopher M. Miles" <numbchild@gmail.com>
>> Cc: "Christopher M. Miles" <numbchild@gmail.com>, Org Mode
>>  <emacs-orgmode@gnu.org>
>> Date: Sun, 02 Oct 2022 15:03:26 +0800
>> 
>> Ihor Radchenko <yantar92@gmail.com> writes:
>> 
>> > "Christopher M. Miles" <numbchild@gmail.com> writes:
>> >
>> >> I replaced step 5 with step 6 by extracting the logic code of
>> >> org-link-beautify, but I found it does not have center-line. That's
>> >> really weird.
>> >> ...
>> >>        (put-text-property
>> >>         start end
>> >>         'display (create-image "~/Downloads/.thumbnails/3veEPJrQrV1EtpH9.png" nil nil :ascent 'center :max-height 512))
>> >>        (make-local-variable 'image-map)
>> >>        (define-key image-map (kbd "<mouse-1>") 'org-open-at-point))
>> >>      #+end_src
>> >
>> > On my side, the put-text-property does have center-line.
>> > But only when buffer is in Org mode.
>> > Yet, it is not Org's fault.
>> >
>> > The reason you are seeing the horizontal line is org-link face.
>> > org-link has underline. And the "center" line you are seeing is actually
>> > underline coming from the face. I'd say it is emacs bug.
>> 
>> Thanks very much for figuring out this issue, Ihor.
>> 
>> I see, I originally post this issue on Emacs-help mailing list, Eli let
>> me forward this thread to Org mode mailing list. Now I need to forward
>> to Emacs-devel mailing list.
>> 
>> In case the background info is missing, link original message here:
>> 
>> https://list.orgmode.org/87mtae2718.fsf@localhost/T/#m35d40f37fdf80f413ddb8d40e3017a6f102651e9
>
> Please report this as a bug, with "M-x report-emacs-bug", and please
> include there all the details, including the recipe to reproduce the
> issue.
>
> Thanks.


-- 

[ stardiviner ]
I try to make every word tell the meaning that I want to express without misunderstanding.

Blog: https://stardiviner.github.io/
IRC(libera.chat, freenode): stardiviner, Matrix: stardiviner
GPG: F09F650D7D674819892591401B5DF1C95AE89AC3

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Re: [CLOSED] text-property displayed image has a center-line when the text face has underline attribute

[Ihor Radchenko]

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On Sun, Oct 2, 2022 at 6:51 PM Christopher M. Miles <numbchild@gmail.com>
wrote:

>
> I hate to rewrite those steps more than 3 times. But I also know Emacs
> contributors should not be forced to fix bug for me. Also I can't fix
> this bug by myself. So I think it's not a bug, I can tolerate this
> center line. Maybe I mastered skill for modify code in Emacs, I might
> come back to fix this bug by myself. But now, let me close it. I'm not
> hating anybody, just hate this process. Thanks for checking out.
>
> Come on.

1. find an image file in your system
2. emacs -Q
3. M-: (erase-buffer)
4. Insert "askdjaklsdj lasasd"
5. M-: (require 'org)
6. M-x font-lock-mode
7. M-: (put-text-property (point-min) (point-max) 'face 'org-link)
8.  M-: (put-text-property (point-min) (point-max) 'display (create-image
"/path/to/image" nil nil :ascent 'center :max-height 512))

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Re: [CLOSED] text-property displayed image has a center-line when the text face has underline attribute

[Eli Zaretskii]

> From: "Christopher M. Miles" <numbchild@gmail.com>
> Cc: numbchild@gmail.com, yantar92@gmail.com, emacs-devel@gnu.org,
>  emacs-orgmode@gnu.org
> Date: Sun, 02 Oct 2022 18:45:41 +0800
> 
> I hate to rewrite those steps more than 3 times.

The problem is, I've read the correspondence on the Org list, and I
still don't understand what are the steps needed, that don't require
the extra Org package.  That is why I( asked for the details: so that
the bug tracker could have them clearly and unambiguously.

I do want to look into the issue and see if there's anything that
needs to be fixed in Emacs.

> But I also know Emacs
> contributors should not be forced to fix bug for me. Also I can't fix
> this bug by myself. So I think it's not a bug, I can tolerate this
> center line. Maybe I mastered skill for modify code in Emacs, I might
> come back to fix this bug by myself. But now, let me close it. I'm not
> hating anybody, just hate this process. Thanks for checking out.

I'm sorry you feel like that.  Perhaps Ihor or someone else could fill
in the blanks and allow us to investigate.

Thanks.

Re: [CLOSED] text-property displayed image has a center-line when the text face has underline attribute

[Eli Zaretskii]

> From: Ihor Radchenko <yantar92@gmail.com>
> Date: Sun, 2 Oct 2022 18:57:56 +0800
> Cc: Eli Zaretskii <eliz@gnu.org>, emacs-devel@gnu.org, emacs-orgmode@gnu.org
> 
> 1. find an image file in your system
> 2. emacs -Q
> 3. M-: (erase-buffer)
> 4. Insert "askdjaklsdj lasasd"
> 5. M-: (require 'org)
> 6. M-x font-lock-mode
> 7. M-: (put-text-property (point-min) (point-max) 'face 'org-link)
> 8.  M-: (put-text-property (point-min) (point-max) 'display (create-image
> "/path/to/image" nil nil :ascent 'center :max-height 512))

Thanks.

This is because of the ":ascent 'center" part, isn't it?

What would you want Emacs to do instead in this case?

Re: [CLOSED] text-property displayed image has a center-line when the text face has underline attribute

[Ihor Radchenko]

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>
> This is because of the ":ascent 'center" part, isn't it?
>
I guess so. The image bottom is below the text baseline and thus the
underline cuts through the image.


> What would you want Emacs to do instead in this case?
>

I do understand how Emacs renders what we get here from the perspective of
glyph composition. Putting underline over the glyph does make sense in many
cases. However, it is clearly not expected in this specific scenario of a
bitmap image.

I think that it could be useful to allow images to be drawn "on top" of the
underlines, cross-lines, etc.

Best,
Ihor

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Re: [CLOSED] text-property displayed image has a center-line when the text face has underline attribute

[Christopher M. Miles]

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Eli Zaretskii <eliz@gnu.org> writes:

>> From: "Christopher M. Miles" <numbchild@gmail.com>
>> Cc: numbchild@gmail.com, yantar92@gmail.com, emacs-devel@gnu.org,
>>  emacs-orgmode@gnu.org
>> Date: Sun, 02 Oct 2022 18:45:41 +0800
>> 
>> I hate to rewrite those steps more than 3 times.
>
> The problem is, I've read the correspondence on the Org list, and I
> still don't understand what are the steps needed, that don't require
> the extra Org package.  That is why I( asked for the details: so that
> the bug tracker could have them clearly and unambiguously.
>
> I do want to look into the issue and see if there's anything that
> needs to be fixed in Emacs.
>
>> But I also know Emacs
>> contributors should not be forced to fix bug for me. Also I can't fix
>> this bug by myself. So I think it's not a bug, I can tolerate this
>> center line. Maybe I mastered skill for modify code in Emacs, I might
>> come back to fix this bug by myself. But now, let me close it. I'm not
>> hating anybody, just hate this process. Thanks for checking out.
>
> I'm sorry you feel like that.  Perhaps Ihor or someone else could fill
> in the blanks and allow us to investigate.
>
> Thanks.

No, it's my personal character and feeling caused this behavior. Not
your fault. I really don't blame anybody.

In bellowing Ihor's email wrote the reproduce steps. Thanks very much Ihor.

-- 

[ stardiviner ]
I try to make every word tell the meaning that I want to express without misunderstanding.

Blog: https://stardiviner.github.io/
IRC(libera.chat, freenode): stardiviner, Matrix: stardiviner
GPG: F09F650D7D674819892591401B5DF1C95AE89AC3

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Re: [CLOSED] text-property displayed image has a center-line when the text face has underline attribute

[Christopher M. Miles]

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Eli Zaretskii <eliz@gnu.org> writes:

>> From: "Christopher M. Miles" <numbchild@gmail.com>
>> Cc: numbchild@gmail.com, yantar92@gmail.com, emacs-devel@gnu.org,
>>  emacs-orgmode@gnu.org
>> Date: Sun, 02 Oct 2022 18:45:41 +0800
>> 
>> I hate to rewrite those steps more than 3 times.
>
> The problem is, I've read the correspondence on the Org list, and I
> still don't understand what are the steps needed, that don't require
> the extra Org package.  That is why I( asked for the details: so that
> the bug tracker could have them clearly and unambiguously.
>
> I do want to look into the issue and see if there's anything that
> needs to be fixed in Emacs.
>
>> But I also know Emacs
>> contributors should not be forced to fix bug for me. Also I can't fix
>> this bug by myself. So I think it's not a bug, I can tolerate this
>> center line. Maybe I mastered skill for modify code in Emacs, I might
>> come back to fix this bug by myself. But now, let me close it. I'm not
>> hating anybody, just hate this process. Thanks for checking out.
>
> I'm sorry you feel like that.  Perhaps Ihor or someone else could fill
> in the blanks and allow us to investigate.
>
> Thanks.

No, it's my personal character and feeling caused this behavior. Not
your fault. I really don't blame anybody.

In bellowing Ihor's email wrote the reproduce steps. Thanks very much Ihor.

-- 

[ stardiviner ]
I try to make every word tell the meaning that I want to express without misunderstanding.

Blog: https://stardiviner.github.io/
IRC(libera.chat, freenode): stardiviner, Matrix: stardiviner
GPG: F09F650D7D674819892591401B5DF1C95AE89AC3

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[SOLVED] Re: [CLOSED] text-property displayed image has a center-line when the text face has underline attribute

[Christopher M. Miles]

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Eli Zaretskii <eliz@gnu.org> writes:

>> From: Ihor Radchenko <yantar92@gmail.com>
>> Date: Sun, 2 Oct 2022 18:57:56 +0800
>> Cc: Eli Zaretskii <eliz@gnu.org>, emacs-devel@gnu.org, emacs-orgmode@gnu.org
>> 
>> 1. find an image file in your system
>> 2. emacs -Q
>> 3. M-: (erase-buffer)
>> 4. Insert "askdjaklsdj lasasd"
>> 5. M-: (require 'org)
>> 6. M-x font-lock-mode
>> 7. M-: (put-text-property (point-min) (point-max) 'face 'org-link)
>> 8.  M-: (put-text-property (point-min) (point-max) 'display (create-image
>> "/path/to/image" nil nil :ascent 'center :max-height 512))
>
> Thanks.
>
> This is because of the ":ascent 'center" part, isn't it?
>
> What would you want Emacs to do instead in this case?

I checked out the docstring of `create-image' have not found related
info about `:ascent'. Today (which is after some days) I review this
problem and searched the `:ascent' in emacs info manual, found this
property explanation. I set it to `:ascent 100` solved the problem. Now
the baseline is at the bottom of image.

Thanks a lot for pointing it out which fixed a big issue of my extension code.

-- 

[ stardiviner ]
I try to make every word tell the meaning that I want to express without misunderstanding.

Blog: https://stardiviner.github.io/
IRC(libera.chat, freenode): stardiviner, Matrix: stardiviner
GPG: F09F650D7D674819892591401B5DF1C95AE89AC3

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[SOLVED] Re: [CLOSED] text-property displayed image has a center-line when the text face has underline attribute

[Christopher M. Miles]

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Eli Zaretskii <eliz@gnu.org> writes:

>> From: Ihor Radchenko <yantar92@gmail.com>
>> Date: Sun, 2 Oct 2022 18:57:56 +0800
>> Cc: Eli Zaretskii <eliz@gnu.org>, emacs-devel@gnu.org, emacs-orgmode@gnu.org
>> 
>> 1. find an image file in your system
>> 2. emacs -Q
>> 3. M-: (erase-buffer)
>> 4. Insert "askdjaklsdj lasasd"
>> 5. M-: (require 'org)
>> 6. M-x font-lock-mode
>> 7. M-: (put-text-property (point-min) (point-max) 'face 'org-link)
>> 8.  M-: (put-text-property (point-min) (point-max) 'display (create-image
>> "/path/to/image" nil nil :ascent 'center :max-height 512))
>
> Thanks.
>
> This is because of the ":ascent 'center" part, isn't it?
>
> What would you want Emacs to do instead in this case?

I checked out the docstring of `create-image' have not found related
info about `:ascent'. Today (which is after some days) I review this
problem and searched the `:ascent' in emacs info manual, found this
property explanation. I set it to `:ascent 100` solved the problem. Now
the baseline is at the bottom of image.

Thanks a lot for pointing it out which fixed a big issue of my extension code.

-- 

[ stardiviner ]
I try to make every word tell the meaning that I want to express without misunderstanding.

Blog: https://stardiviner.github.io/
IRC(libera.chat, freenode): stardiviner, Matrix: stardiviner
GPG: F09F650D7D674819892591401B5DF1C95AE89AC3

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