Suggestion: Widen angle quotation marks to visually contrast with less-than/greater-than signs #392
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Feb 9, 2021
This is a significant update to Cascadia Code including a large number of bug fixes as well as updating the font to offer support for Fira Code v5 ligature support. This update supersedes PR #373. Closes #262 - ⏎ added Closes #264 - additional codepoints for control characters added Closes #281 - `!:` and `!.` added Closes #290 - `/\` and `\/` added Closes #301 - `??=` added Closes #324 - ℞ added Closes #327 - `<:>` and other variants implemented via the `calt` refactoring Closes #359 - house added Closes #371 - Added x-height instruction into ttfautohint to control the height of the lowercase. Closes #375 - Completely redesigned quote marks for better recognition Closes #377 - updated hinting to achieve more consistent results Closes #381 - increased height of thetamod Closes #382 - reduced the width of the hooklefts Closes #383 - updated heights on esh, glottalstop, glottalstopreversed Closes #384 - tweaked hinting a little bit. Maybe it'll help :) Closes #386 - added remaining soft-dotting Closes #392 - changed designs of angled quotes (they are now round) Closes #394 - changed former `~=` symbol to a simpler component-based version. Should be less confusing now for Lua / Matlab users. Closes #395 - makes the underline thicker based on font weight Closes #400 - increased size of degree Closes #219 The full control pictures block has been added (u+2400 to u+2426). For purposes of rendering, the two letter abbreviations have been used instead of the standard three letter abbreviations: Additionally, ss20 includes the oft-unused graphical representations of these codepoints (for fun!): Closes #276 (infinite arrows) Full support for Fira Code's current ligature set (with a few exceptions). Now featuring infinite arrows!!! This involved a full refactoring of the `calt` feature—for those interested, it now uses forward-looking substitutions instead of backward-looking substitutions and progressive substitution to reduce code. This also required some redesigning of the greater / lesser related ligatures. Please note, I have also removed all the obsolete ligatures now covered by the arrows code. Closes #329 There was a mismatch in the font's postscript naming conventions that was corrected. Should now render all weights in Word. **Note** there is apparently an additional bug in Mac Word's implementation of variable fonts which should be available in an update mid-Feb. * Not listed – Reworked the hints for the mod and superscript glyphs so that they're bottom-up rather than top-down. This allows for better bottom alignments. Aside from the above changes, this version also includes many other small updates including spacing, outline quality improvements, and fixing hinting.
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Description of the new feature/enhancement
Angle quotation marks, or guillemets, are used in many languages to denote speech. They are also often used in a technical context as a means of demarcating email addresses (e.g., ‹notifications@github.com›) or denoting objects such as Unicode codepoints (e.g., ‹U+211D› DOUBLE-STRUCK CAPITAL R).
In Cascadia Code’s current design, the angle used in both the single and double angle quotation marks is quite narrow, relative to comparable programming and traditional fonts, and importantly, makes it more difficult to distinguish them from less-than/greater-than signs. For this reason, I’d like to propose increasing/widening the angle for the following four codepoints:
Examples, comparison with other fonts
Render from LuaLaTeX, viewed in Evince PDF viewer—note the spacing and angle of Cascadia Code’s angle quotes in comparison to less-than/greater-than
Angle brackets, less-than/greater-than signs and single guillemets in fonts Cambria, DejaVu Serif, Andron Mega Corpus, Andika and Everson Mono (from Wikipedia)
Proposed technical implementation details
Increase/widen the angle used in the design of both the single and double angle quotation marks to aid in visual differentiation from the less-than/greater-than signs, especially at small sizes.
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