[Feature]: Document the `search=` "Option after the #"

[ssokolow]

Is the feature relevant to the Firefox PDF Viewer?

Yes

Feature description

I was all geared up to file a feature request for an equivalent to the --find=STRING option PDF readers like Okular, Evince, etc. have and then, while accumulating evidence for the "Other PDF viewers" list, I discovered that someone used PDF.js already having search= as an argument for adding it to Chrome's PDF viewer.

Because of this, I now need to use PDF.js from Mozilla Firefox and use that as it does have the ability to search. :/

Please update https://github.com/mozilla/pdf.js/wiki/Viewer-options to add it.

Other PDF viewers

No response

[ssokolow]

...and also the phrase=true option, please. I only learned of it when I dug into viewer.mjs looking to patch the "bug" that all variations on search="foo bar baz" that I tried got interpreted as foo OR bar OR baz instead of as a substring search.

(...and, if anyone who sees this knows, I'm curious why it has the default that it does. Is it a performance optimization? ...because all data points I have suggest keyword-OR-ing is the least useful, least intuitive, and most frustrating search behaviour so it feels like it has to be something akin to defaulting to ASCIIbetical sorting.)