Aditya Mahajan schrieb am 26.04.2021 um 18:02:

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Von: Maier, Denis Christian (UB) Gesendet: Donnerstag, 22. April 2021 15:15 An: 'mailing list for ConTeXt users' Betreff: Style options and setupinterlinespace

Hi,

the wiki (https://wiki.contextgarden.net/Font_Switching) currently says:

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These quick font switches are meant for changing the font style, alternative, or size of a few words: they do not change the bodyfont, so they don't affect interline spacing or math font sizes. So, if you want to change the font size of an entire paragraph, use \switchtobodyfonthttps://wiki.contextgarden.net/Command/switchtobodyfont described below in Complete Font Changehttps://wiki.contextgarden.net/Font_Switching#Complete_font_change. However, it is fine to use them as style directives in setup commands, that is, using them as an option for style=https://wiki.contextgarden.net/Style_and_Color_Parameters... in any setup command that accepts style option From this, I'd infer that a or should change the interline spacing as well. But it does not seem to be the case as the example below shows. Using style=\tfx is roughly equivalent to typing `\tfx` at an appropriate place. There is no automatic \setupinterlinespace after the style value is executed.

There is always the option to use \switchtobodyfont to change the font size which affects also the linespacing but in this case one need \setupinterlinespace after \tfx. In older versions (a few months ago) even \switchtobodyfont didn't help here when you used the style-key to change the font size. Wolfgang

Wikified, as per Aditya's suggestion. Denis

-----Ursprüngliche Nachricht----- Von: Maier, Denis Christian (UB) Gesendet: Montag, 26. April 2021 22:50 An: mailing list for ConTeXt users Betreff: AW: [NTG-context] Style options and setupinterlinespace

Thanks everyone for your answers. In that case I'll change the wording in the wiki.

All best, Denis

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-----Ursprüngliche Nachricht----- Von: ntg-context Im Auftrag von Wolfgang Schuster Gesendet: Montag, 26. April 2021 19:28 An: mailing list for ConTeXt users Betreff: Re: [NTG-context] Style options and setupinterlinespace

Aditya Mahajan schrieb am 26.04.2021 um 18:02:

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Von: Maier, Denis Christian (UB) Gesendet: Donnerstag, 22. April 2021 15:15 An: 'mailing list for ConTeXt users' Betreff: Style options and setupinterlinespace

Hi,

the wiki (https://wiki.contextgarden.net/Font_Switching) currently says:

...

These quick font switches are meant for changing the font style, alternative, or size of a few words: they do not change the bodyfont, so they don't affect interline spacing or math font sizes. So, if you want to change the font size of an entire paragraph, use

\switchtobodyfont<https://wiki.contextgarden.net/Command/switchtobod

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yfont> described below in Complete Font

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hange>. However, it is fine to use them as style directives in hange>setup commands, that is, using them as an option for

Change<https://wiki.contextgarden.net/Font_Switching#Complete_font_c style=https://wiki.contextgarden.net/Style_and_Color_Parameters...

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in any setup command that accepts style option From this, I'd infer that a or should change the interline spacing as well. But it does not seem to be the case as the example below shows. Using style=\tfx is roughly equivalent to typing `\tfx` at an appropriate place. There is no automatic \setupinterlinespace after the style value is executed.

There is always the option to use \switchtobodyfont to change the font size which affects also the linespacing but in this case one need \setupinterlinespace after \tfx.

In older versions (a few months ago) even \switchtobodyfont didn't help here when you used the style-key to change the font size.

Wolfgang

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On 4/27/2021 5:49 AM, Aditya Mahajan wrote:

On Mon, 26 Apr 2021, denis.maier@ub.unibe.ch wrote:

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Wikified, as per Aditya's suggestion.

I expanded on the description to make it clearer (hopefully). However, as I was testing, I realized that the remark about math font sizes ("These quick font switches [...] do not change the bodyfont, so they don't affect [...] math font size") is no longer true. In LTMX, \tfa correctly scales the math font size as well.

\starttext \tfc x$x$x \stoptext

I am not sure when this behavior changed, but looking at some of my old documents I see that I have been using "\tfc $+$" in some of my tikz code for about 4 years. So, it appears to be a old feature. I am thinking of changing the wiki from:

These quick font switches are meant for changing the font style, alternative, or size of a few words: they do not change the bodyfont, so they don't affect interline spacing or math font sizes

to

These quick font switches are meant for changing the font style, alternative, or size of a few words: they do not change the bodyfont, so they don't affect interline spacing.

(so not mention math at all). Let me know if I am misunderstanding something here.

These tfa tfb .. are often used in titles so that's by the math scales along (it's what \synchronizebigmath etc do). Now, although that is unrelated, there has been a change in the font code but that only kicks in when you enable it: \enableexperiments[fonts.compact] you can see the difference in th enumber of reported font instances. You can read a bit about it in followingup-fonts. For complex setups is a bit faster in loading, it takes less memory, but normally more calculations happens so that compensates it. The imapact in the lmtx code is that (when we go that route) some font code can be dropped. The impact on luametatex-the-engine is that all font related dimensions have more complex calculations, and of course the impact on the math code is even larger because there we also have the styles to deal with. On the other hand, we now have basically one load of those fonts. You can do a quick test with \starttext {\ttc x$x$x} {\glyphscale 1720 x$x$x} {\glyphxscale 1720 x$x$x} {\glyphyscale 1720 x$x$x} \stoptext you can also imagien that it has an impact on font handling \starttext {\glyphscale 1720 effe}{\glyphxscale 1720 effe}{\glyphyscale 1720 effe} {\glyphscale 1720 ef}{\glyphxscale 1720 feef}{\glyphyscale 1720 fe} \stoptext because suddenly we have three more properties that distinguishes them. So, something like this impacts quite some subsystems: font, math, backend, interfaces. But I'm not too unhappy with it. The question is, when will we make the experiment the default. Hans ps. Of course, when enabled, for cjk fonts the load/memory impact is more impressive. ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------

On 4/26/21 12:37 PM, denis.maier@ub.unibe.ch wrote:

Hi again,

should I change the wiki or is the current behaviour a bug (that will eventually be corrected)?

Hi Denis, sorry for the delayed reply. I don’t think it’s a bug, but a feature.

the wiki (https://wiki.contextgarden.net/Font_Switching) currently says:

...

These quick font switches are meant for changing the font style, alternative, or size of a few words: they do not change the bodyfont, so they don't affect interline spacing or math font sizes. So, if you want to change the font size of an entire paragraph, use \switchtobodyfont https://wiki.contextgarden.net/Command/switchtobodyfont described below in Complete Font Change https://wiki.contextgarden.net/Font_Switching#Complete_font_change. However, it is fine to use them as style directives in setup commands, that is, using them as an option for |style= https://wiki.contextgarden.net/Style_and_Color_Parameters...| in any setup command that accepts |style| option

From this, I’d infer that a «style=tfx» or «style=\tfx» should change the interline spacing as well. But it does not seem to be the case as the example below shows.

To change interlinespace you need either to use \switchtobodyfont[x] or \tfx\setupinterlinespace. In my experience, \tfx doesn’t behave in a different way as a value for a style key than in standard text. Just in case it helps, Pablo -- http://www.ousia.tk