Bug with text.getSelected

WebViewer
1

I’m having an issue with the mupdf.text.getSelected function.

With certain pdfs, if you select text over multiple paragraphs, then you get the following error:

Uncaught (in promise) TypeError: can't access property "left", u[0] is undefined function http://localhost:5173/lib/chunk-R6FPMO7L.js:188 executeFunction http://localhost:5173/lib/chunk-KUHEKGUW.js:6 handleFunctionCall http://localhost:5173/lib/chunk-KUHEKGUW.js:6 listenMessageEvent http://localhost:5173/lib/chunk-KUHEKGUW.js:6 value http://localhost:5173/lib/chunk-R6FPMO7L.js:188 next http://localhost:5173/lib/chunk-KUHEKGUW.js:6 next http://localhost:5173/lib/chunk-R6FPMO7L.js:32 _next http://localhost:5173/lib/chunk-R6FPMO7L.js:32 next http://localhost:5173/lib/chunk-R6FPMO7L.js:32 Ze http://localhost:5173/lib/chunk-R6FPMO7L.js:32 _next http://localhost:5173/lib/chunk-R6FPMO7L.js:32 next http://localhost:5173/lib/chunk-R6FPMO7L.js:32 Ze http://localhost:5173/lib/chunk-R6FPMO7L.js:32 _next http://localhost:5173/lib/chunk-R6FPMO7L.js:32 next http://localhost:5173/lib/chunk-R6FPMO7L.js:32 Re http://localhost:5173/lib/chunk-R6FPMO7L.js:32 _next http://localhost:5173/lib/chunk-R6FPMO7L.js:32 next http://localhost:5173/lib/chunk-R6FPMO7L.js:32 Ze http://localhost:5173/lib/chunk-R6FPMO7L.js:32 _next http://localhost:5173/lib/chunk-R6FPMO7L.js:32 next http://localhost:5173/lib/chunk-R6FPMO7L.js:32 Ze http://localhost:5173/lib/chunk-R6FPMO7L.js:32 _next http://localhost:5173/lib/chunk-R6FPMO7L.js:32 next http://localhost:5173/lib/chunk-R6FPMO7L.js:32 l http://localhost:5173/lib/chunk-R6FPMO7L.js:32 invokeTask http://localhost:5173/lib/polyfills-SCHOHYNV.js:1 onInvokeTask http://localhost:5173/lib/chunk-R6FPMO7L.js:36 invokeTask http://localhost:5173/lib/polyfills-SCHOHYNV.js:1 runTask http://localhost:5173/lib/polyfills-SCHOHYNV.js:1 invokeTask http://localhost:5173/lib/polyfills-SCHOHYNV.js:1 I http://localhost:5173/lib/polyfills-SCHOHYNV.js:1 x http://localhost:5173/lib/polyfills-SCHOHYNV.js:1 U http://localhost:5173/lib/polyfills-SCHOHYNV.js:1 j http://localhost:5173/lib/polyfills-SCHOHYNV.js:1 scheduleTask http://localhost:5173/lib/polyfills-SCHOHYNV.js:1 scheduleTask http://localhost:5173/lib/polyfills-SCHOHYNV.js:1 scheduleEventTask http://localhost:5173/lib/polyfills-SCHOHYNV.js:1 l http://localhost:5173/lib/polyfills-SCHOHYNV.js:1 IT</</<[441]</</</</<[54]</</< http://localhost:5173/lib/chunk-R6FPMO7L.js:10 IT</</<[441]</</</</<[54]</< http://localhost:5173/lib/chunk-R6FPMO7L.js:10 IT</</<[441]</</</</<[54]< http://localhost:5173/lib/chunk-R6FPMO7L.js:10 m http://localhost:5173/lib/chunk-R6FPMO7L.js:9 m http://localhost:5173/lib/chunk-R6FPMO7L.js:9 IT</</<[441]</</</</<[32]< http://localhost:5173/lib/chunk-R6FPMO7L.js:10 m http://localhost:5173/lib/chunk-R6FPMO7L.js:9 m http://localhost:5173/lib/chunk-R6FPMO7L.js:9 IT</</<[441]</</</</<[31]< http://localhost:5173/lib/chunk-R6FPMO7L.js:10 m http://localhost:5173/lib/chunk-R6FPMO7L.js:9 m http://localhost:5173/lib/chunk-R6FPMO7L.js:9 IT</</<[441]</</</</<[15]< http://localhost:5173/lib/chunk-R6FPMO7L.js:10 m http://localhost:5173/lib/chunk-R6FPMO7L.js:9 m http://localhost:5173/lib/chunk-R6FPMO7L.js:9 IT</</<[441]</</</</<[10]< http://localhost:5173/lib/chunk-R6FPMO7L.js:10 m http://localhost:5173/lib/chunk-R6FPMO7L.js:9 d http://localhost:5173/lib/chunk-R6FPMO7L.js:9 IT</</<[441]</</</< http://localhost:5173/lib/chunk-R6FPMO7L.js:9 IT</</<[441]</</</< http://localhost:5173/lib/chunk-R6FPMO7L.js:9 IT</</<[441]</</< http://localhost:5173/lib/chunk-R6FPMO7L.js:9 IT</</<[441]</< http://localhost:5173/lib/chunk-R6FPMO7L.js:10 IT</</<[441]< http://localhost:5173/lib/chunk-R6FPMO7L.js:10 i http://localhost:5173/lib/chunk-R6FPMO7L.js:1 i http://localhost:5173/lib/chunk-R6FPMO7L.js:1 IT</</<[144]</</< http://localhost:5173/lib/chunk-R6FPMO7L.js:2 IT</</<[144]</< http://localhost:5173/lib/chunk-R6FPMO7L.js:2 IT</</<[144]< http://localhost:5173/lib/chunk-R6FPMO7L.js:2 i http://localhost:5173/lib/chunk-R6FPMO7L.js:1 i http://localhost:5173/lib/chunk-R6FPMO7L.js:1 IT</</<[13]< http://localhost:5173/lib/chunk-R6FPMO7L.js:1 i http://localhost:5173/lib/chunk-R6FPMO7L.js:1 i http://localhost:5173/lib/chunk-R6FPMO7L.js:1 IT</</<[15]< http://localhost:5173/lib/chunk-R6FPMO7L.js:1 i http://localhost:5173/lib/chunk-R6FPMO7L.js:1 t http://localhost:5173/lib/chunk-R6FPMO7L.js:1 IT http://localhost:5173/lib/chunk-R6FPMO7L.js:1 IT http://localhost:5173/lib/chunk-R6FPMO7L.js:1 IT http://localhost:5173/lib/chunk-R6FPMO7L.js:1 pi http://localhost:5173/lib/chunk-R6FPMO7L.js:1 <anonymous> http://localhost:5173/lib/chunk-R6FPMO7L.js:50 mupdf.js:1:178102 onclick App.jsx:25 AsyncFunctionThrow self-hosted:804 (Async: async) apply self-hosted:2253 _parse mupdf.js:1 next mupdf.js:1 next mupdf.js:1 _next mupdf.js:1 next mupdf.js:1 No mupdf.js:1 _next mupdf.js:1 next mupdf.js:1 next mupdf.js:1 gi mupdf.js:1 next mupdf.js:1 next mupdf.js:1 next mupdf.js:1 _next mupdf.js:1 next mupdf.js:1 No mupdf.js:1 _next mupdf.js:1 next mupdf.js:1 Vi mupdf.js:1 _next mupdf.js:1 next mupdf.js:1 t4 mupdf.js:1 (Async: EventListener.handleEvent) o2 mupdf.js:1 zi mupdf.js:1 _trySubscribe mupdf.js:1 Si mupdf.js:1 gi mupdf.js:1 subscribe mupdf.js:1 Vi mupdf.js:1 Fi mupdf.js:1 Si mupdf.js:1 gi mupdf.js:1 subscribe mupdf.js:1 No mupdf.js:1 Fi mupdf.js:1 Si mupdf.js:1 gi mupdf.js:1 subscribe mupdf.js:1 _Ho mupdf.js:1 Fi mupdf.js:1 Si mupdf.js:1 gi mupdf.js:1 subscribe mupdf.js:1 No mupdf.js:1 Fi mupdf.js:1 Si mupdf.js:1 gi mupdf.js:1 subscribe mupdf.js:1 xo mupdf.js:1 Fi mupdf.js:1 Si mupdf.js:1 gi mupdf.js:1

I can’t really debug it since the code is minified.

Here’s a link to a reproduction repo: GitHub - ricky-c-2001/mupdf-webviewer-react-bug-poc

And here’s a video of it in action:

2

Got it - yes, this is a bug - it seems that if a selection contains an empty line, that line returns empty rects array ([]) and that causes the error.

This should be very easy to fix and we will provide an update to resolve it soon.