<div dir="ltr">Just to add another voice, it seems that this is Apple's way of being "helpful." It looks like this is caused by something they call "Data Detectors" which can be toggled on or off, but only in some applications. There is such a toggle in TeXShop under Edit | Substitutions but this doesn't appear to have any effect within the PDF viewer.<div><br></div><div>Curiously, I get different behaviors in the PDF file produced by your MWE depending on whether I use the TeXShop PDF viewer or separately open the PDF file with Safari. With Safari, it still detects these numbers as phone numbers but it doesn't start up FaceTime. </div><div><br></div><div>In the "misery loves company" department, there are more than a few people on the Internet complaining about (seemingly) not being able to turn off Data Detectors in Safari!</div><div><br></div><div>Bill Slough</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Feb 12, 2024 at 7:50 PM Markus Klyver <<a href="mailto:markusklyver@hotmail.com">markusklyver@hotmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div class="msg1751529603694140359">
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Seems like a localization issue. </div>
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<div><span style="font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)"><a href="https://support.apple.com/guide/mac-help/change-the-system-language-mh26684/mac" id="m_-2443567208068257598LPlnk" target="_blank">https://support.apple.com/guide/mac-help/change-the-system-language-mh26684/mac</a></span></div>
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<div id="m_-2443567208068257598LPBorder_GTaHR0cHM6Ly9zdXBwb3J0LmFwcGxlLmNvbS9ndWlkZS9tYWMtaGVscC9jaGFuZ2UtdGhlLXN5c3RlbS1sYW5ndWFnZS1taDI2Njg0L21hYw.." style="width:100%;margin-top:16px;margin-bottom:16px;max-width:800px;min-width:424px">
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<a id="m_-2443567208068257598LPUrlAnchor238993" href="https://support.apple.com/guide/mac-help/change-the-system-language-mh26684/mac" style="text-decoration:none" target="_blank">Change the language your Mac uses</a></div>
<div id="m_-2443567208068257598LPDescription238993" style="font-size:14px;max-height:100px;color:rgb(102,102,102);font-family:wf_segoe-ui_normal,"Segoe UI","Segoe WP",Tahoma,Arial,sans-serif;margin-bottom:12px;margin-right:8px;overflow:hidden">
On your Mac, change the language shown in menus and dialogs and in many apps.</div>
<div id="m_-2443567208068257598LPMetadata238993" style="font-size:14px;font-weight:400;color:rgb(166,166,166);font-family:wf_segoe-ui_normal,"Segoe UI","Segoe WP",Tahoma,Arial,sans-serif">
<a href="http://support.apple.com" target="_blank">support.apple.com</a></div>
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<div id="m_-2443567208068257598divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>Från:</b> MacOSX-TeX <<a href="mailto:macosx-tex-bounces@email.esm.psu.edu" target="_blank">macosx-tex-bounces@email.esm.psu.edu</a>> för Ross Moore <<a href="mailto:ross.moore@mq.edu.au" target="_blank">ross.moore@mq.edu.au</a>><br>
<b>Skickat:</b> den 13 februari 2024 02:45<br>
<b>Till:</b> TeX on Mac OS X Mailing List <<a href="mailto:macosx-tex@email.esm.psu.edu" target="_blank">macosx-tex@email.esm.psu.edu</a>><br>
<b>Ämne:</b> Re: [OS X TeX] Where does the assumption that large counts are phone numbers arise?</font>
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<div style="line-break:after-white-space">Hi Doug.
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<div>It has nothing to do with TeXshop, IMHO.</div>
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<div>You can see it happening in my Mail .app.</div>
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<div><img width="662" alt="Screenshot 2024-02-13 at 12.40.22 pm.png" src="cid:ii_18da02b7fbd67749cac1"></div>
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<div>That popup, which appeared after clicking the number, is asking to add the tel.# into Contacts.</div>
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<div>Be assured I did not do so. :-)</div>
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<div>Surely it is a system bug/feature — dunno how to stop it.</div>
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<div>Very amusing post; thanks!</div>
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<div>Ross</div>
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<blockquote type="cite">
<div>On 13 Feb 2024, at 11:03 am, Doug McKenna <<a href="mailto:doug@mathemaesthetics.com" target="_blank">doug@mathemaesthetics.com</a>> wrote:</div>
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<div>I'm running TeXShop 4.7 on MacOS 12.1, using pdfTeX, Version 3.141592653-2.6-1.40.22 (TeX Live 2021).<br>
<br>
I'm writing a math paper that references a sequence of combinatorial counts. The sequence gets large pretty fast.<br>
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Here is a MWE:<br>
<br>
%%%%%%%%%%%%%%%%%%%%%<br>
\documentclass[letterpaper,11pt]{article}<br>
\begin{document}<br>
For $n=1\dots 7$ the counts are $0, 4, 40, 2244, 185920, 106912792, 90124167440$.<br>
<br>
In PDF output, click on either of the two final (non-phone) numbers.<br>
\end{document}<br>
%%%%%%%%%%%%%%%%%%%%%<br>
<br>
When viewing the PDF after typesetting, I just discovered that clicking on either of the last two counts brings up the FaceTime app on my Mac. After my initial WTF confusion, I then discovered that hovering the mouse for a while over either large count in the
PDF raises a little hint box showing the count prefixed with "tel: ".<br>
<br>
These are not telephone numbers, and it's annoying for someone to have assumed they are, allegedly for my convenience.<br>
<br>
Where in all the pdfTeX machinery is this assumption being made, if at all? Is it in the PDF file itself, or is it in the MacOS PDF display library that TeXShop is using? Does this only occur on MacOS?<br>
<br>
Can I affirmatively do something in my TeX code that creates the PDF to prevent this false positive?<br>
<br>
<br>
Doug McKenna<br>
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