5 ms·

A more subtle bug: go to page broke. Before the update, going to page 100 in a textbook would consistently get you to the page labeled 100. Now it takes you to

by nxc18 10y ago

A more subtle bug: go to page broke. Before the update, going to page 100 in a textbook would consistently get you to the page labeled 100. Now it takes you to the hundredth physical page, which thanks to the cover, toc, etc. is probably not where you wanted to go. Not a huge deal, but just another thing it used to do better than the competition and now doesn't.

coldtea 10y ago
>Before the update, going to page 100 in a textbook would consistently get you to the page labeled 100. Now it takes you to the hundredth physical page, which thanks to the cover, toc, etc. is probably not where you wanted to go. Goto page has never worked reliably for me, even prior to the update.
- snowwrestler 10y ago
  I don't have the details in front of me, but I believe it is dependent on how the PDF is created. IIRC, page numbers must be somehow indicated to the PDF reader client.
  - dom0 10y ago
    Correct; a PDF can indicate an arbitrary page number for every physical page. Stupid PDF readers navigate in physical pages; more sophisticated readers use indicated pages, even when taking user input (go to page Intro-6).
WalterBright 10y ago
Microsoft's PDF viewer for Windows 8 had no `goto page` at all. If you had a 500 page PDF, you had to furiously slide left for minutes to get to where you left off. Of course it didn't remember the last page read, either. They added the goto in an update, but the failure to remember last page read is still a sickness in just about every major PDF reader. Oh, and while I'm ranting, it ought to show the first page of the PDF as the thumbnail. Some do it, some don't. C'mon, guys, it's 2017. It's like getting an update to your favorite programming language and they removed scoping of declarations.
eridius 10y ago
I don't believe you. I've never had "go to page" take me to the page labelled 100 if that's not actually the 100th pdf page. It's always taken me to the 100th pdf page instead, and I've had to scroll to get to the one labelled 100. And when I say "always", I mean every single time I've used a PDF like this in the 15 years that OS X has existed.
- nxc18 10y ago
  It tends to only be higher quality pdfs. I use a lot of pdfs made by textbook publishers and they are tagged appropriately.
  - eridius 10y ago
    I've got copies of the ISO standards for C99 and C++98, and ISO working drafts for C++11 and C++14, and they appear to be high quality (including a comprehensive TOC), but they've never exhibited the behavior you describe. That said, apparently one of my C++ working drafts actually causes Preview to spend 20+ seconds at 100% CPU when opening on macOS 10.12.2. That's no good, and I don't recall it doing this before. Time to go file a radar I guess.

by nxc18 10y ago

coldtea 10y ago

>Before the update, going to page 100 in a textbook would consistently get you to the page labeled 100. Now it takes you to the hundredth physical page, which thanks to the cover, toc, etc. is probably not where you wanted to go. Goto page has never worked reliably for me, even prior to the update.

snowwrestler 10y ago
I don't have the details in front of me, but I believe it is dependent on how the PDF is created. IIRC, page numbers must be somehow indicated to the PDF reader client.
- dom0 10y ago
  Correct; a PDF can indicate an arbitrary page number for every physical page. Stupid PDF readers navigate in physical pages; more sophisticated readers use indicated pages, even when taking user input (go to page Intro-6).

WalterBright 10y ago

Microsoft's PDF viewer for Windows 8 had no `goto page` at all. If you had a 500 page PDF, you had to furiously slide left for minutes to get to where you left off. Of course it didn't remember the last page read, either. They added the goto in an update, but the failure to remember last page read is still a sickness in just about every major PDF reader. Oh, and while I'm ranting, it ought to show the first page of the PDF as the thumbnail. Some do it, some don't. C'mon, guys, it's 2017. It's like getting an update to your favorite programming language and they removed scoping of declarations.

eridius 10y ago

I don't believe you. I've never had "go to page" take me to the page labelled 100 if that's not actually the 100th pdf page. It's always taken me to the 100th pdf page instead, and I've had to scroll to get to the one labelled 100. And when I say "always", I mean every single time I've used a PDF like this in the 15 years that OS X has existed.

nxc18 10y ago
It tends to only be higher quality pdfs. I use a lot of pdfs made by textbook publishers and they are tagged appropriately.
- eridius 10y ago
  I've got copies of the ISO standards for C99 and C++98, and ISO working drafts for C++11 and C++14, and they appear to be high quality (including a comprehensive TOC), but they've never exhibited the behavior you describe. That said, apparently one of my C++ working drafts actually causes Preview to spend 20+ seconds at 100% CPU when opening on macOS 10.12.2. That's no good, and I don't recall it doing this before. Time to go file a radar I guess.