Changing into greek glyphs in texinfo-mode

Changing into greek glyphs in texinfo-mode

[pietru]

I want to change \alpha and \beta in texinfo files to show the 
appropriate glyph.  How can I do it?

(defvar glyph-list
  '(;; Greek
    ("\\alpha" . ?α)
    ("\\beta" . ?β))
  "A list of glyph marks.")

Re: Changing into greek glyphs in texinfo-mode

[pietru]

I want to make the glyph substitution when next character is any of 
" ", "-", "+", "\", ",", ":", ";", ".", "_", "^".

This targets every \something construct on its own or followed by
another one:

"\\\\\\<[a-z]+\\>\\([\s+\,:;._^-]\\\\\\<[a-z]+\\>\\)?"

This matches \alpha and \alpha followed by another construct like
\alpha-\thing:

"\\\\\\<alpha+\\>\\([\s+\,:;._^-]\\\\\\<[a-z]+\\>\\)?"

But I need help on to do the actual substitution.

> Sent: Monday, February 01, 2021 at 1:18 AM
> From: pietru@caramail.com
> To: "Help Gnu Emacs" <help-gnu-emacs@gnu.org>
> Subject: Changing into greek glyphs in texinfo-mode
>
> I want to change \alpha and \beta in texinfo files to show the 
> appropriate glyph.  How can I do it?
> 
> (defvar glyph-list
>   '(;; Greek
>     ("\\alpha" . ?α)
>     ("\\beta" . ?β))
>   "A list of glyph marks.")
> 
> 
> 
> 
>

Re: Changing into greek glyphs in texinfo-mode

[Stefan Monnier]

> I want to change \alpha and \beta in texinfo files to show the 
> appropriate glyph.  How can I do it?
>
> (defvar glyph-list
>   '(;; Greek
>     ("\\alpha" . ?α)
>     ("\\beta" . ?β))
>   "A list of glyph marks.")

Not sure how you want it to be "change"d, but maybe you're looking for
`prettify-symbols-mode` and its `prettify-symbols-alist`?


        Stefan

Re: Changing into greek glyphs in texinfo-mode

[pietru]

> Sent: Monday, February 01, 2021 at 10:08 AM
> From: "Stefan Monnier" <monnier@iro.umontreal.ca>
> To: help-gnu-emacs@gnu.org
> Subject: Re: Changing into greek glyphs in texinfo-mode
>
> > I want to change \alpha and \beta in texinfo files to show the 
> > appropriate glyph.  How can I do it?
> >
> > (defvar glyph-list
> >   '(;; Greek
> >     ("\\alpha" . ?α)
> >     ("\\beta" . ?β))
> >   "A list of glyph marks.")
> 
> Not sure how you want it to be "change"d, but maybe you're looking for
> `prettify-symbols-mode` and its `prettify-symbols-alist`?
 
It is an obscure piece of code.  I am trying to make a minor mode for texinfo,
and have an clearer implementation.

 
>         Stefan
> 
> 
>

Re: Changing into greek glyphs in texinfo-mode

[pietru]

Does anybody have a strategy how to do this thing?  I do not think
I should do a replacement, only for display, which I can turn on
or off. 

> Sent: Monday, February 01, 2021 at 10:17 AM
> From: pietru@caramail.com
> To: "Stefan Monnier" <monnier@iro.umontreal.ca>
> Cc: help-gnu-emacs@gnu.org
> Subject: Re: Changing into greek glyphs in texinfo-mode
>
> > Sent: Monday, February 01, 2021 at 10:08 AM
> > From: "Stefan Monnier" <monnier@iro.umontreal.ca>
> > To: help-gnu-emacs@gnu.org
> > Subject: Re: Changing into greek glyphs in texinfo-mode
> >
> > > I want to change \alpha and \beta in texinfo files to show the 
> > > appropriate glyph.  How can I do it?
> > >
> > > (defvar glyph-list
> > >   '(;; Greek
> > >     ("\\alpha" . ?α)
> > >     ("\\beta" . ?β))
> > >   "A list of glyph marks.")
> > 
> > Not sure how you want it to be "change"d, but maybe you're looking for
> > `prettify-symbols-mode` and its `prettify-symbols-alist`?
>  
> It is an obscure piece of code.  I am trying to make a minor mode for texinfo,
> and have an clearer implementation.
> 
>  
> >         Stefan
> > 
> > 
> >
> 
>

Re: Changing into greek glyphs in texinfo-mode

[Gregory Heytings]

>
> Does anybody have a strategy how to do this thing?  I do not think I 
> should do a replacement, only for display, which I can turn on or off.
>

Follow Stefan's advice:

(add-hook 'texinfo-mode-hook
           (lambda ()
             (push '("\\alpha" . ?α) prettify-symbols-alist)
             (push '("\\beta" . ?β) prettify-symbols-alist)))

This only affects the way "\alpha" and "\beta" are displayed, and you can 
turn it on or off with M-x prettify-symbols-mode .  If you want to turn it 
on by default, do:

(add-hook 'texinfo-mode-hook
           (lambda ()
             (push '("\\alpha" . ?α) prettify-symbols-alist)
             (push '("\\beta" . ?β) prettify-symbols-alist)
             (prettify-symbols-mode)))

Re: Changing into greek glyphs in texinfo-mode

[pietru]

> Sent: Tuesday, February 02, 2021 at 1:51 AM
> From: "Gregory Heytings" <gregory@heytings.org>
> To: help-gnu-emacs@gnu.org
> Subject: Re: Changing into greek glyphs in texinfo-mode
>
> 
> >
> > Does anybody have a strategy how to do this thing?  I do not think I 
> > should do a replacement, only for display, which I can turn on or off.
> >
> 
> Follow Stefan's advice:
> 
> (add-hook 'texinfo-mode-hook
>            (lambda ()
>              (push '("\\alpha" . ?α) prettify-symbols-alist)
>              (push '("\\beta" . ?β) prettify-symbols-alist)))
> 
> This only affects the way "\alpha" and "\beta" are displayed, and you can 
> turn it on or off with M-x prettify-symbols-mode .  If you want to turn it 
> on by default, do:

Correct.  I want to write a replacement code as I find the one in
tex-mode.el too cryptic.  For starts I want to try using just
\alpha and \beta. 

 
> (add-hook 'texinfo-mode-hook
>            (lambda ()
>              (push '("\\alpha" . ?α) prettify-symbols-alist)
>              (push '("\\beta" . ?β) prettify-symbols-alist)
>              (prettify-symbols-mode)))
>

Re: Changing into greek glyphs in texinfo-mode

[moasenwood--- via Users list for the GNU Emacs text editor]

pietru wrote:

> Does anybody have a strategy how to do this thing? I do not
> think I should do a replacement, only for display, which
> I can turn on or off.

Yes, check out for example dafny-mode which you find in MELPAs
boogie-friends version 20210127.1405 -

Then type fore example

  ensures x ==> "formal verification stinks"

and it will change ==> into something I cannot even make out
here in the Linux VT.

Very annoying IMO.

Check out the compose-* stuff - is that what it is?

-- 
underground experts united
http://user.it.uu.se/~embe8573
https://dataswamp.org/~incal

Re: Changing into greek glyphs in texinfo-mode

[pietru]

> Sent: Tuesday, February 02, 2021 at 2:01 AM
> From: "moasenwood--- via Users list for the GNU Emacs text editor" <help-gnu-emacs@gnu.org>
> To: help-gnu-emacs@gnu.org
> Subject: Re: Changing into greek glyphs in texinfo-mode
>
> pietru wrote:
> 
> > Does anybody have a strategy how to do this thing? I do not
> > think I should do a replacement, only for display, which
> > I can turn on or off.
> 
> Yes, check out for example dafny-mode which you find in MELPAs
> boogie-friends version 20210127.1405 -

Thank you.
 
> Then type fore example
> 
>   ensures x ==> "formal verification stinks"

Have looked at line 203 for the keyword "forall".  I changed it for
\alpha.  Now I need some more function for this to take effect. 

 (list "\\\\\\<alpha+\\>\\([\s+\,:;._^-]\\\\\\<[a-z]+\\>\\)?"
      '(1 (compose-region (match-beginning 1) (match-end 1) ?α))
      '(1 font-lock-keyword-face append))

> and it will change ==> into something I cannot even make out
> here in the Linux VT.
> 
> Very annoying IMO.
> 
> Check out the compose-* stuff - is that what it is?
> 
> -- 
> underground experts united
> http://user.it.uu.se/~embe8573
> https://dataswamp.org/~incal
> 
> 
>

Re: Changing into greek glyphs in texinfo-mode

[pietru]

I am having a problem with dafny-font-lock-keywords, as I cannot
see where the functionality for replacing the "forall" keyword
is being called and set up.



> Sent: Tuesday, February 02, 2021 at 2:59 AM
> From: pietru@caramail.com
> To: moasenwood@zoho.eu
> Cc: help-gnu-emacs@gnu.org
> Subject: Re: Changing into greek glyphs in texinfo-mode
>
> > Sent: Tuesday, February 02, 2021 at 2:01 AM
> > From: "moasenwood--- via Users list for the GNU Emacs text editor" <help-gnu-emacs@gnu.org>
> > To: help-gnu-emacs@gnu.org
> > Subject: Re: Changing into greek glyphs in texinfo-mode
> >
> > pietru wrote:
> > 
> > > Does anybody have a strategy how to do this thing? I do not
> > > think I should do a replacement, only for display, which
> > > I can turn on or off.
> > 
> > Yes, check out for example dafny-mode which you find in MELPAs
> > boogie-friends version 20210127.1405 -
> 
> Thank you.
>  
> > Then type fore example
> > 
> >   ensures x ==> "formal verification stinks"
> 
> Have looked at line 203 for the keyword "forall".  I changed it for
> \alpha.  Now I need some more function for this to take effect. 
> 
>  (list "\\\\\\<alpha+\\>\\([\s+\,:;._^-]\\\\\\<[a-z]+\\>\\)?"
>       '(1 (compose-region (match-beginning 1) (match-end 1) ?α))
>       '(1 font-lock-keyword-face append))
> 
> > and it will change ==> into something I cannot even make out
> > here in the Linux VT.
> > 
> > Very annoying IMO.
> > 
> > Check out the compose-* stuff - is that what it is?
> > 
> > -- 
> > underground experts united
> > http://user.it.uu.se/~embe8573
> > https://dataswamp.org/~incal
> > 
> > 
> >
> 
>

Re: Changing into greek glyphs in texinfo-mode

[moasenwood--- via Users list for the GNU Emacs text editor]

pietru wrote:

> I am having a problem with dafny-font-lock-keywords, as
> I cannot see where the functionality for replacing the
> "forall" keyword is being called and set up.

If it is/uses font-lock then this is handled outside of the
mode, the mode just sets it up, that way not every mode has to
have the horsepower to also execute it.

Keep on using the source, Luke! Line 198 looks suspicious, as
do 509...

-- 
underground experts united
http://user.it.uu.se/~embe8573
https://dataswamp.org/~incal

Re: Changing into greek glyphs in texinfo-mode

[pietru]

It is calling  prog-mode.el, which is part of emacs.  I am trying to
make a minor mode with all functionality in my minor mode though.

What function would I need to copy over?



> Sent: Tuesday, February 02, 2021 at 4:10 PM
> From: "moasenwood--- via Users list for the GNU Emacs text editor" <help-gnu-emacs@gnu.org>
> To: help-gnu-emacs@gnu.org
> Subject: Re: Changing into greek glyphs in texinfo-mode
>
> pietru wrote:
>
> > I am having a problem with dafny-font-lock-keywords, as
> > I cannot see where the functionality for replacing the
> > "forall" keyword is being called and set up.
>
> If it is/uses font-lock then this is handled outside of the
> mode, the mode just sets it up, that way not every mode has to
> have the horsepower to also execute it.
>
> Keep on using the source, Luke! Line 198 looks suspicious, as
> do 509...
>
> --
> underground experts united
> http://user.it.uu.se/~embe8573
> https://dataswamp.org/~incal
>
>
>

Re: Changing into greek glyphs in texinfo-mode

[pietru]

I can see that dafny-mode ts relying on "prog-mode.el".  Same
prettify functionality is also being provided by "tex-mode.el".
But I don't see how tex-mode.el uses prog-mode.el


> Sent: Tuesday, February 02, 2021 at 5:04 PM
> From: pietru@caramail.com
> To: moasenwood@zoho.eu
> Cc: help-gnu-emacs@gnu.org
> Subject: Re: Changing into greek glyphs in texinfo-mode
>
> It is calling  prog-mode.el, which is part of emacs.  I am trying to
> make a minor mode with all functionality in my minor mode though.
>
> What function would I need to copy over?
>
>
>
> > Sent: Tuesday, February 02, 2021 at 4:10 PM
> > From: "moasenwood--- via Users list for the GNU Emacs text editor" <help-gnu-emacs@gnu.org>
> > To: help-gnu-emacs@gnu.org
> > Subject: Re: Changing into greek glyphs in texinfo-mode
> >
> > pietru wrote:
> >
> > > I am having a problem with dafny-font-lock-keywords, as
> > > I cannot see where the functionality for replacing the
> > > "forall" keyword is being called and set up.
> >
> > If it is/uses font-lock then this is handled outside of the
> > mode, the mode just sets it up, that way not every mode has to
> > have the horsepower to also execute it.
> >
> > Keep on using the source, Luke! Line 198 looks suspicious, as
> > do 509...
> >
> > --
> > underground experts united
> > http://user.it.uu.se/~embe8573
> > https://dataswamp.org/~incal
> >
> >
> >
>
>

Re: Changing into greek glyphs in texinfo-mode

[pietru]

The problem with prog-mode.el is that it is used as major mode, whereas I
am doing a minor made for texinfo-mode.

> Sent: Wednesday, February 03, 2021 at 12:56 AM
> From: pietru@caramail.com
> To: pietru@caramail.com
> Cc: help-gnu-emacs@gnu.org
> Subject: Re: Changing into greek glyphs in texinfo-mode
>
> I can see that dafny-mode ts relying on "prog-mode.el".  Same
> prettify functionality is also being provided by "tex-mode.el".
> But I don't see how tex-mode.el uses prog-mode.el
>
>
> > Sent: Tuesday, February 02, 2021 at 5:04 PM
> > From: pietru@caramail.com
> > To: moasenwood@zoho.eu
> > Cc: help-gnu-emacs@gnu.org
> > Subject: Re: Changing into greek glyphs in texinfo-mode
> >
> > It is calling  prog-mode.el, which is part of emacs.  I am trying to
> > make a minor mode with all functionality in my minor mode though.
> >
> > What function would I need to copy over?
> >
> >
> >
> > > Sent: Tuesday, February 02, 2021 at 4:10 PM
> > > From: "moasenwood--- via Users list for the GNU Emacs text editor" <help-gnu-emacs@gnu.org>
> > > To: help-gnu-emacs@gnu.org
> > > Subject: Re: Changing into greek glyphs in texinfo-mode
> > >
> > > pietru wrote:
> > >
> > > > I am having a problem with dafny-font-lock-keywords, as
> > > > I cannot see where the functionality for replacing the
> > > > "forall" keyword is being called and set up.
> > >
> > > If it is/uses font-lock then this is handled outside of the
> > > mode, the mode just sets it up, that way not every mode has to
> > > have the horsepower to also execute it.
> > >
> > > Keep on using the source, Luke! Line 198 looks suspicious, as
> > > do 509...
> > >
> > > --
> > > underground experts united
> > > http://user.it.uu.se/~embe8573
> > > https://dataswamp.org/~incal
> > >
> > >
> > >
> >
> >
>
>