Implement visibility expressions for optional content

[janpe2]

Fixes #12097

[Snuffleupagus]

Thanks for taking this on!

I've not really reviewed the patch yet, but I've got two smaller suggestions to (maybe) improve overall readability.

[Snuffleupagus]

/botio-linux preview

[pdfjsbot]

From: Bot.io (Linux m4)

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Received

Command cmd_preview from @Snuffleupagus received. Current queue size: 0

Live output at: http://54.67.70.0:8877/359ab8cdd482933/output.txt

[pdfjsbot]

From: Bot.io (Linux m4)

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Success

Full output at http://54.67.70.0:8877/359ab8cdd482933/output.txt

Total script time: 4.38 mins

Published

• Viewer: http://54.67.70.0:8877/359ab8cdd482933/web/viewer.html
• Viewer (legacy): http://54.67.70.0:8877/359ab8cdd482933/legacy/web/viewer.html

[Snuffleupagus]

r=me, with passing tests; thank you for implementing this!

[Snuffleupagus]

/botio test

[pdfjsbot]

From: Bot.io (Linux m4)

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Received

Command cmd_test from @Snuffleupagus received. Current queue size: 0

Live output at: http://54.67.70.0:8877/31cc38f7979c897/output.txt

[pdfjsbot]

From: Bot.io (Windows)

---

Received

Command cmd_test from @Snuffleupagus received. Current queue size: 0

Live output at: http://3.101.106.178:8877/675b22f2d18d58e/output.txt

[pdfjsbot]

From: Bot.io (Linux m4)

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Failed

Full output at http://54.67.70.0:8877/31cc38f7979c897/output.txt

Total script time: 25.70 mins

• Font tests: Passed
• Unit tests: Passed
• Integration Tests: Passed
• Regression tests: FAILED

Image differences available at: http://54.67.70.0:8877/31cc38f7979c897/reftest-analyzer.html#web=eq.log

[pdfjsbot]

From: Bot.io (Windows)

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Failed

Full output at http://3.101.106.178:8877/675b22f2d18d58e/output.txt

Total script time: 28.62 mins

• Font tests: Passed
• Unit tests: Passed
• Integration Tests: Passed
• Regression tests: FAILED

Image differences available at: http://3.101.106.178:8877/675b22f2d18d58e/reftest-analyzer.html#web=eq.log

[timvandermeij]

Nice clean implementation; thanks!

/botio makeref

[pdfjsbot]

From: Bot.io (Linux m4)

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Received

Command cmd_makeref from @timvandermeij received. Current queue size: 0

Live output at: http://54.67.70.0:8877/6a64634ff434806/output.txt

[pdfjsbot]

From: Bot.io (Windows)

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Received

Command cmd_makeref from @timvandermeij received. Current queue size: 4

Live output at: http://3.101.106.178:8877/038385020669e08/output.txt

[pdfjsbot]

From: Bot.io (Windows)

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Success

Full output at http://3.101.106.178:8877/038385020669e08/output.txt

Total script time: 26.25 mins

• Lint: Passed
• Make references: Passed
• Check references: Passed

[pdfjsbot]

From: Bot.io (Linux m4)

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Failed

Full output at http://54.67.70.0:8877/6a64634ff434806/output.txt

Total script time: 60.00 mins

• Lint: Passed

[Snuffleupagus]

/botio-linux makeref

[pdfjsbot]

From: Bot.io (Linux m4)

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Received

Command cmd_makeref from @Snuffleupagus received. Current queue size: 0

Live output at: http://54.67.70.0:8877/2f2e14917d5c52d/output.txt

[pdfjsbot]

From: Bot.io (Linux m4)

---

Success

Full output at http://54.67.70.0:8877/2f2e14917d5c52d/output.txt

Total script time: 23.15 mins

• Lint: Passed
• Make references: Passed
• Check references: Passed