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Unsupported character : error thrown #265

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danbraik opened this issue Oct 1, 2021 · 1 comment · May be fixed by #352
Open

Unsupported character : error thrown #265

danbraik opened this issue Oct 1, 2021 · 1 comment · May be fixed by #352

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@danbraik
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danbraik commented Oct 1, 2021

Hello !

Calling this function with the library "pdfkit" and the font "Lora/Lora-VariableFont_wght.ttf"

        content = "A´b"
        this.doc
                    .font("ContentFont")
                    .text(
                        content,
                        0, 0
                    );

throw this error (which concerns your library)

2021-10-01 14:46:56.746 HAECProcess Main failed! TypeError: Cannot read property 'xCoordinate' of null
Par défaut
2021-10-01 14:46:56.746 HAEC at GPOSProcessor.getAnchor (/usr/src/app/node_modules/fontkit/index.js:10223:20)
Par défaut
2021-10-01 14:46:56.746 HAEC at GPOSProcessor.applyAnchor (/usr/src/app/node_modules/fontkit/index.js:10210:27)
Par défaut
2021-10-01 14:46:56.746 HAEC at GPOSProcessor.applyLookup (/usr/src/app/node_modules/fontkit/index.js:10106:16)
Par défaut
2021-10-01 14:46:56.746 HAEC at GPOSProcessor.applyLookups (/usr/src/app/node_modules/fontkit/index.js:7419:26)
Par défaut
2021-10-01 14:46:56.746 HAEC at GPOSProcessor.applyFeatures (/usr/src/app/node_modules/fontkit/index.js:7372:10)
Par défaut
2021-10-01 14:46:56.746 HAEC at GPOSProcessor.applyFeatures (/usr/src/app/node_modules/fontkit/index.js:10243:42)
Par défaut
2021-10-01 14:46:56.746 HAEC at ShapingPlan.process (/usr/src/app/node_modules/fontkit/index.js:6792:19)
Par défaut
2021-10-01 14:46:56.746 HAEC at OTLayoutEngine.position (/usr/src/app/node_modules/fontkit/index.js:10361:17)
Par défaut
2021-10-01 14:46:56.746 HAEC at LayoutEngine.position (/usr/src/app/node_modules/fontkit/index.js:10515:32)
Par défaut
2021-10-01 14:46:56.746 HAEC at LayoutEngine.layout (/usr/src/app/node_modules/fontkit/index.js:10487:10)

the cause of the error is that this little strange character " ´ " (known as U+00B4 : ACUTE ACCENT) is following a letter.

Thanks !
@Pomax
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Pomax commented Oct 1, 2021

Did you check whether that same thing happens using just fontkit, though? (it probably still crashes, but since this is the fontkit repo, showing purely fontkit code makes it more likely someone can help figure out what's going wrong)

@luizfilipe luizfilipe linked a pull request Nov 1, 2024 that will close this issue
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Handle possible undefined anchors luizfilipe/fontkit
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@Pomax @danbraik