Continued incorrect mapping of greek letters in Calibri

[knightofni-i]

Calibri v6.26 continues to have incorrect mapping of the Unicode cursive and regular greek letters for at least beta, theta, and phi (ϕ φ θ ϑ β ϐ). The mapping shown in the "typing preview" input box is correct, but this image shows that all the styles (light regular, light italics, regular, italics, bold, and bold italics) have one or more incorrect mapping.

For an example of the correct Unicode mapping, here is an equivalent screen capture for Arial.

As noted in the original issue #759 , this can lead to confusion in mathematical and scientific documents, so it is unacceptable for a Word default font.

[knightofni-i]

Additionally, the updated font should be rolled out to both Windows 10 (currently still at Calibri 6.23) and 11.

[tiroj]

This is by design. The cursive forms are stylistically appropriate as the default forms of these letters in an italic font.

The Unicode encoding distinction between cursive and non-curisve forms of these letters is to support their use as distinct symbols in mathematics, not to govern or restrict the appropriate use of the styles in Greek text typography.

Yes, this does mean that not all fonts that support Greek text typography are suitable for mathematical typesetting, but there are many other aspects of math that require specialised fonts rather than those targeting text typography.

[knightofni-i]

Ok, I will accept that it is intentional to use the cursive form when the closed form is italicized. Two issues remain:

1. The cursive phi character (φ) still renders wrong in Calibri v6.26. (It renders as the ϕ glyph unless italicized.)
2. The font version has not been rolled out to Windows 10 & lower.

[alib-ms]

We fixed following quite some time ago.

[alib-ms]

Results from Font Settings:

[alib-ms]

knightofni-i, can you please confirm if this looks okay. Here are the results from Word.

[moyogo]

@alib-ms ϕ 03D5 GREEK PHI SYMBOL should not be loopy. But it’s loopy in the italics of Calibri. See https://www.unicode.org/versions/Unicode15.0.0/ch07.pdf#page=20

[moyogo]

@knightofni-i

Ok, I will accept that it is intentional to use the cursive form when the closed form is italicized. Two issues remain:

1. The cursive phi character (φ) still renders wrong in Calibri v6.26. (It renders as the ϕ glyph unless italicized.)

U+03C6 φ can be loopy or straight. When straight it can be identical to U+03D5 ϕ which should always be straight.

2. The font version has not been rolled out to Windows 10 & lower.

[alib-ms]

[alib-ms]

No changes were made to U+03C6

I will take the initiative to implement these fixes in Windows 10. It would be beneficial to have a specific example illustrating the business impact to strengthen the case presented to the servicing team.

[knightofni-i]

The only real business case was that our customer's technical report template uses Calibri and we had to go through and change the symbols throughout the report. With the font Aptos now rolled out as the default in MS Office, I am less annoyed by this issue since that renders appropriately for math symbols. I'll close this issue as a "wontfix"

(Note that this is still Calibri 6.23 that is being shown)

[moyogo]

@knightofni-i I'd recommend keeping the issue open until the phi symbol is fixed and usable in Calibri.