v4.003 Italic Interpolation issues with diacritics

[kenmcd]

v4.003 Italic Interpolation issues with diacritics Some of the diacritics move off center in different masters. File: Merriweather-Italic[opsz,wdth,wght].ttf Glyphs: /uni04EA/uni04F1/uni0439.sc/uni045D.sc/uni045C.sc/AEacute/uni04EA/uni04F1/uni0439.sc/uni045D.sc/uni045C.sc

Some of the other diacritics seem to move up and down when they probably should not. So you may want to review the height across masters.

[kenmcd]

and this /dieresiscombcy.case

[m4rc1e]

Thanks @kenmcd. I always love receiving these reports.. I'm currently writing a tool to catch these anomalies.

[m4rc1e]

I have a prototype working nicely in Glyphsapp sources. Here are some of my findings:

I should probably invest the time to get this working on TTFs.

[m4rc1e]

@EbenSorkin Please could you inspect the following glyphs:

semisoftsign-cy.sc 29428.0 iishorttail-cy 12817.0 tetse-cy 12576.0 Iebreve-cy 9174.0 Io-cy 9154.0 Iegrave-cy 9143.0 addressedtothesubject 1061.0 ddotaccent 708.0 Dzcaron 619.0 trademark 619.0 f_f_l.sc 612.0 dzcaron 573.0 Edieresis-cy 543.0 iishort-cy.sc 543.0 f_f_i.sc 537.0 udieresis-cy 535.0 aring 524.0 endlowtonemod 521.0 Rstroke 500.0 iigrave-cy.sc 492.0 adotbelow 486.0 nj.sc 474.0 dz 473.0 commercialMinusSign 467.0 uhungarumlaut-cy 461.0 zdotbelow 455.0 zcaron 443.0 whook 436.0 Obarreddieresis-cy 436.0 exclamdouble 433.0 emtail-cy.sc 423.0 Dz 420.0 ae.sc 420.0 aeacute.sc 420.0 aemacron.sc 420.0 aie-cy.sc 420.0 f_f.sc 411.0 fdotaccent 409.0 oe.sc 409.0 dz.sc 408.0 dzcaron.sc 408.0 uk-cy.sc 406.0 uk-cy 405.0 Ezhcaron 403.0 Kaverticalstroke-cy 403.0 enge-cy 398.0 komitje-cy 398.0 dittomark 397.0 tripleprime 394.0 longbar_part. 394.0 odotbelow 392.0 fl.sc 392.0 Uk-cy 391.0 numero 389.0 m.sc 387.0 macute.sc 387.0 mdotaccent.sc 387.0 mdotbelow.sc 387.0 em-cy.sc 387.0 radical 386.0 Emtail-cy 385.0 Nj 383.0 OE 382.0 yusbig-cy 382.0 omegaBroad-cy.sc 380.0 Dhook 378.0 NJ 378.0 tildeoverlaycomb 376.0 nje-cy 374.0 M 372.0 Macute 372.0 Mdotaccent 372.0 Mdotbelow 372.0 Em-cy 372.0 umacron-cy 372.0 Mhook 370.0 ij_acutecomb 370.0 dram-arm 369.0 ruble 369.0 naira 366.0 Fita-cy 365.0 nj 364.0 mhook.sc 362.0 Yusbig-cy 362.0 adblgrave.sc 361.0 Bhook 360.0 Nje-cy 360.0 IJ_acutecomb 357.0 IJ.loclNLD 357.0

There will be false positives in there but all these glyphs were flagged by my tool.

[EbenSorkin]

Yes. Thank you!

On Fri, Jul 5, 2024 at 5:32 AM Marc Foley @.***> wrote:

@EbenSorkin https://github.com/EbenSorkin Please could you inspect the following glyphs:

semisoftsign-cy.sc 29428.0 iishorttail-cy 12817.0 tetse-cy 12576.0 Iebreve-cy 9174.0 Io-cy 9154.0 Iegrave-cy 9143.0 addressedtothesubject 1061.0 ddotaccent 708.0 Dzcaron 619.0 trademark 619.0 f_f_l.sc 612.0 dzcaron 573.0 Edieresis-cy 543.0 iishort-cy.sc 543.0 f_f_i.sc 537.0 udieresis-cy 535.0 aring 524.0 endlowtonemod 521.0 Rstroke 500.0 iigrave-cy.sc 492.0 adotbelow 486.0 nj.sc 474.0 dz 473.0 commercialMinusSign 467.0 uhungarumlaut-cy 461.0 zdotbelow 455.0 zcaron 443.0 whook 436.0 Obarreddieresis-cy 436.0 exclamdouble 433.0 emtail-cy.sc 423.0 Dz 420.0 ae.sc 420.0 aeacute.sc 420.0 aemacron.sc 420.0 aie-cy.sc 420.0 f_f.sc 411.0 fdotaccent 409.0 oe.sc 409.0 dz.sc 408.0 dzcaron.sc 408.0 uk-cy.sc 406.0 uk-cy 405.0 Ezhcaron 403.0 Kaverticalstroke-cy 403.0 enge-cy 398.0 komitje-cy 398.0 dittomark 397.0 tripleprime 394.0 longbar_part. 394.0 odotbelow 392.0 fl.sc 392.0 Uk-cy 391.0 numero 389.0 m.sc 387.0 macute.sc 387.0 mdotaccent.sc 387.0 mdotbelow.sc 387.0 em-cy.sc 387.0 radical 386.0 Emtail-cy 385.0 Nj 383.0 OE 382.0 yusbig-cy 382.0 omegaBroad-cy.sc 380.0 Dhook 378.0 NJ 378.0 tildeoverlaycomb 376.0 nje-cy 374.0 M 372.0 Macute 372.0 Mdotaccent 372.0 Mdotbelow 372.0 Em-cy 372.0 umacron-cy 372.0 Mhook 370.0 ij_acutecomb 370.0 dram-arm 369.0 ruble 369.0 naira 366.0 Fita-cy 365.0 nj 364.0 mhook.sc 362.0 Yusbig-cy 362.0 adblgrave.sc 361.0 Bhook 360.0 Nje-cy 360.0 IJ_acutecomb 357.0 IJ.loclNLD 357.0

There will be false positives in there but all these glyphs were flagged by my tool.

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