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| [https://www.ibm.com/us-en/marketplace/apl2 Courier APL2 Unicode] || [https://www.ibm.com/account/reg/us-en/signup?formid=urx-32206 IBM] || The classic Courier typewriter font, extended with APL symbols.||
| [https://www.ibm.com/us-en/marketplace/apl2 Courier APL2 Unicode] || [https://www.ibm.com/account/reg/us-en/signup?formid=urx-32206 IBM] || The classic Courier typewriter font, extended with APL symbols.||
[[File:Courier APL2 Unicode.png|none]]
[[File:Courier APL2 Unicode.png|none]]
|-
| [https://github.com/slavfox/Cozette Cozette] || [https://github.com/slavfox/Cozette/releases/download/v.1.20.0/CozetteVector.ttf GitHub] || A bitmap programming font optimized for coziness. (In Dyalog Windows IDE, works best in sizes divisble by 13) || [[File:Cozette.png|none]]
|-
|-
|[https://mlochbaum.github.io/BQN/fonts.html DejaVu BQN Sans Mono]||[https://github.com/mlochbaum/BQN/blob/master/docs/DejaVuBQNSansMono.ttf?raw=true GitHub]||DejaVu Sans Mono with support for [[BQN]].||
|[https://mlochbaum.github.io/BQN/fonts.html DejaVu BQN Sans Mono]||[https://github.com/mlochbaum/BQN/blob/master/docs/DejaVuBQNSansMono.ttf?raw=true GitHub]||DejaVu Sans Mono with support for [[BQN]].||
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</syntaxhighlight>
</syntaxhighlight>
The <syntaxhighlight lang=shell inline>Apl385.ttf</syntaxhighlight> font file must be placed in the same directory as the HTML file, and all APL code must be wrapped in <syntaxhighlight lang=html inline><pre></syntaxhighlight> or <syntaxhighlight lang=html inline><code></syntaxhighlight> elements.
The <syntaxhighlight lang=shell inline>Apl385.ttf</syntaxhighlight> font file must be placed in the same directory as the HTML file, and all APL code must be wrapped in <syntaxhighlight lang=html inline><pre></syntaxhighlight> or <syntaxhighlight lang=html inline><code></syntaxhighlight> elements.
== Bad rendering ==
The [[wikipedia:Blink browser engine|Blink browser engine]] instructs the [[wikipedia:HarfBuzz|HarfBuzz]] text shaping engine to prefer fidelity in typeface over fidelity in glyph shape. As a consequence, text using a font that lacks the <syntaxhighlight lang=apl inline>≢</syntaxhighlight> glyph ([[Tally]], [[Not Match]]) often ends up looking like <syntaxhighlight lang=apl inline>≡/</syntaxhighlight> (Match reduction), causing great confusion. The issue affects diverse things like Android WebView, Chromium Embedded Framework, all [[wikipedia:Electron (softwareframework)|Electron]] apps, [[wikipedia:Qt software)|Qt software]]), as well as many popular web browsers, like Amazon Silk, Google Chrome, Microsoft Edge, Brave, Opera, Vivaldi, and the Yandex Browser.
In browsers, it is possible to mitigate the problem by overriding the used font, either by configuring the browser to override all font specifications, or via a user style manager like [[wikipedia:Stylus (browser extension)|Stylus]] or [[wikipedia:Stylish|Stylish]], which gives more fine-grained control.
Here are examples of appropriate user style rules for some common websites:
{|class=wikitable
! Domain !! Rule
|-
| chat.stackexchange.com || <syntaxhighlight lang=css inline>div.message pre,div.message code{font-family:"APL385 Unicode"}</syntaxhighlight>
|-
| stackexchange.com || <syntaxhighlight lang=css inline>.s-prose code,.comment-copy code{font-family:"APL385 Unicode"}</syntaxhighlight>
|-
| discord.com || <syntaxhighlight lang=css inline>code{font-family:"APL385 Unicode"!important}</syntaxhighlight>
|-
| github.com || <syntaxhighlight lang=css inline>textarea,.cm-line,.blob-code-inner{font-family:"APL385 Unicode"}</syntaxhighlight>
|}


== Changing font in Dyalog RIDE ==
== Changing font in Dyalog RIDE ==
[[Dyalog Ltd]]'s cross-platform RIDE interface, which is the default GUI interface on all non-Windows platforms, does not expose a font setting. However, it is trivial to change font:
[[Dyalog Ltd]]'s cross-platform RIDE interface, which is the default GUI interface on all non-Windows platforms, did not expose a font setting until version 4.5. However, it is trivial to change font:
* Open ride-base.css[[#loc|*]]
* Open ride-base.css[[#loc|*]]
* Find the line that says <syntaxhighlight lang=css inline>src: url('./fonts/Apl385.woff') format('woff'), url('./fonts/Apl385.ttf') format('truetype');</syntaxhighlight>
* Find the line that says <syntaxhighlight lang=css inline>src: url('./fonts/Apl385.woff') format('woff'), url('./fonts/Apl385.ttf') format('truetype');</syntaxhighlight>
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:** Linux or AIX: /opt/mdyalog/18.2/64/unicode/Contents/Resources/Dyalog/RIDEapp/resources/app/style/ride-base.css
:** Linux or AIX: /opt/mdyalog/18.2/64/unicode/Contents/Resources/Dyalog/RIDEapp/resources/app/style/ride-base.css
:** macOS: /Applications/Dyalog-18.2.app/Contents/Resources/Dyalog/RIDEapp/resources/app/style/ride-base.css
:** macOS: /Applications/Dyalog-18.2.app/Contents/Resources/Dyalog/RIDEapp/resources/app/style/ride-base.css
==Designing a font==
Making a good APL font is no small task. Since many [[glyph]]s share sub-glyphs due to the history of [[overstrike|overstriking]], multiple dimensions of commonality need to be aligned. The following table can help:
{|class=wikitable
!Class !! Glyphs
|-
| alphas || <code>⍺⍶@</code>
|-
| arrows-down || <code>↓⍗⍖</code>
|-
| arrows-left || <code>←⍇⍅</code>
|-
| arrows-right || <code>→⍈⍆</code>
|-
| arrows-up || <code>↑⍐⍏</code>
|-
| asterisks || <code>*⍣⍟⋆</code>
|-
| brackets || <code>[]⌈⌊⌷</code>
|-
| circles || <code>○⍥⍟⌽⍉⊖⍜⊙⌾∅</code>
|-
| colons || <code>:⍠÷⌹</code>
|-
| commas || <code>,⍪;⍮</code>
|-
| dashes || <code>-+÷⌹⌿⍀⍪⍏⍖⊢⊣</code>
|-
| dels || <code>∇⍒⍫⍢</code>
|-
| deltas || <code>∆⍙⍋⍍</code>
|-
| diamonds || <code>⋄⌺⍚</code>
|-
| diereses || <code>¨⍨⍥⍤⍣⍢⍡⍩∵</code>
|-
| dots || <code>.:;?!⍰∵‼</code>
|-
| epsilons || <code>∊⍷</code>
|-
| equals || <code>=≠⌸⍯</code>
|-
| iotas || <code>⍳⍸</code>
|-
| jots || <code>∘⍤⍛⍝⍎⍕¤⌾⟃⟄</code>
|-
| letters || <code>⍺⍶∆⍙∂∊⍷⍳⍸λπ⍴ϼχ⍵⍹∫</code>
|-
| omegas || <code>⍵⍹</code>
|-
| quads || <code>⎕⌸⌹⌺⌻⌼⍁⍂⍃⍄⍇⍈⍌⍍⍐⍓⍯⍰</code>
|-
| quotes || <code>'!⍘⍞"‼</code>
|-
| shoes-down || <code>∪⍦</code>
|-
| shoes-left || <code>⊂⊆⍧⟃</code>
|-
| shoes-right || <code>⊃⊇⟄</code>
|-
| shoes-up || <code>∩⋔</code>
|-
| slashes || <code>/⌿⍁%⫽</code>
|-
| slashes-back || <code>\⍀⍉⍂⑊</code>
|-
| stiles || <code><nowiki>|</nowiki>⌽⍒⍋∥⍭⍦⍧$</code>
|-
| tacks-down || <code>⌶⊤⍕⍑⍡</code>
|-
| tacks-up || <code>⌶⊥⍎⍊</code>
|-
| tildes || <code>~⍬⍭⍱⍲</code>
|-
| underscores || <code>_⍙⍷⍛⍸⊆⊇⍊⍜⍶⍹⍮⍚⍘ⒶⒷⒸⒹⒺⒻⒼⒽⒾⒿⓀⓁⓂⓃⓄⓅⓆⓇⓈⓉⓊⓋⓌⓍⓎⓏ</code>*
|-
| wedges-down || <code>∨⍱⍌</code>
|-
| wedges-left || <code><≤⍃ᑈ«</code>
|-
| wedges-right || <code>>≥⍄⍩ᐵ»</code>
|-
| wedges-up || <code>∧⍲⍓</code>
|-
| miscellaneous || <code>➥∞√˝⇐</code>
|}
:<nowiki>*</nowiki> [[Dyalog APL]] maps the traditional APL underscored alphabet to [[Unicode]]'s circled uppercase letters.


== References ==
== References ==
<references/>
<references/>
{{APL development}}[[Category:APL character set]][[Category:Lists]]
{{APL development}}[[Category:APL character set]][[Category:Lists]]
Retrieved from ‘https://aplwiki.com/wiki/Special:MobileDiff/10026...11358’

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