Hyphenation doesn't work on local installation

[anghenfil]

Hey,

I can't get working hyphenation of a german html page with vivliostyle-cli. Weirdly, it does work on the Demo Viewer: https://vivliostyle.org/viewer/#src=https://gist.github.com/anghenfil/4a7635e45c900e636561d93756ac0b66 but not on my local (archlinux) system (neither with the viewer nor the pdf from vivliostyle build).

I already tried to use --executable-browser with the path to my local chromium installation (where it does work when I view the HTML with chromium directly), but once I use vivliostyle (either viewer or via build) the hyphenation stops working.

For the demo HTML see https://gist.github.com/anghenfil/4a7635e45c900e636561d93756ac0b66.

I also tried a fresh ubuntu docker container, but hyphenation didn't work either.

Any ideas?
Best anghenfil

[anghenfil]

Maybe related to microsoft/playwright#34067?

[MurakamiShinyu]

This is a known issue:

• Hyphenation on Google Chrome on non-macOS platforms vivliostyle.js#569

[anghenfil]

Thanks, is there any workaround? How does the viewer on the demo instance does this? Am 10. Januar 2025 07:17:18 MEZ schrieb Shinyu Murakami ***@***.***>:

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This is a known issue: - vivliostyle/vivliostyle.js#569 -- Reply to this email directly or view it on GitHub: #551 (comment) You are receiving this because you authored the thread. Message ID: ***@***.***>

[anghenfil]

This is a known issue:

* [Hyphenation on Google Chrome on non-macOS platforms vivliostyle.js#569](https://github.com/vivliostyle/vivliostyle.js/issues/569)

Chromium got a new headless mode, it should be fixed:

https://issues.chromium.org/issues/40257759

"New headless mode behaves exactly like the headful Chrome, so hyphenation options are supposed to be the same. Since hypenation options are language dependant, please make sure that relevant languages are enabled in the profile. Note that new headless Chrome starts in incognoto mode, so you'll have to select one with --user-data-dir."

Maybe the issue is the missing chromium profile?

[MurakamiShinyu]

Maybe related to microsoft/playwright#34067?

According to this issue's comments, Playwright v1.49 has hyphen-data for the headless_shell (equivalent to the old headless mode) and hyphenation works in the headless_shell but does not work in normal chrome.

Vivliostyle CLI uses the same Chromium (normal chrome) for both preview (headed mode) and build (headless mode) commands (See: #545 and #547). So hyphenation does not work on both commands (except on macOS where Chromium uses macOS's hyphenation).

[anghenfil]

Since playwright does'nt seem to intend fixing the issue (but instead removing hyphen-data for the headless_shell), is it possible to build a workaround? Could we modify the playwright chrome installation / give the vivliostyle-cli users the options to include hyphen-data? Am 11. Januar 2025 03:38:00 MEZ schrieb Shinyu Murakami ***@***.***>:

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> Maybe related to [microsoft/playwright#34067](microsoft/playwright#34067)? According to this issue's comments, Playwright v1.49 has `hyphen-data` for the `headless_shell` (equivalent to the old headless mode) and hyphenation works in the `headless_shell` but does not work in normal `chrome`. Vivliostyle CLI uses the same Chromium (normal `chrome`) for both preview (headed mode) and build (headless mode) commands (See: #545 and #547). So hyphenation does not work on both commands (except on macOS where Chromium uses macOS's hyphenation). -- Reply to this email directly or view it on GitHub: #551 (comment) You are receiving this because you authored the thread. Message ID: ***@***.***>

[MurakamiShinyu]

Switching Playwright to Puppeteer might be a solution of this problem.

Puppeteer uses Chrome for Testing which includes hyphen-data. I've tested Puppeteer on Windows and confirmed that hyphenation is working.