[OS X TeX] Strangeness re IsoLatin9 and UTF-8 encodings

Herbert Schulz via MacOSX-TeX macosx-tex at email.esm.psu.edu
Sun Feb 25 05:37:30 CET 2024

> On Feb 24, 2024, at 5:46 PM, adawcr <adawcrmb at gmail.com> wrote:
> On February 22 I did the following.
> In one directory I have a .tex file with all three permissions set to read only. I copied the file to another directory using the copy command. When I opened the file that was in the second directory I got the following popup:
> <Screen Shot 2024-02-23 at 2.40.20 PM.jpg>
> [This file was opened with
>  IsoLatin9 encoding.
>  The file could not be opened with Unicode (UTF-8)
>  encoding because it was not saved with that
>  encoding. If you wish to open in another encoding,
>  close the window and open again.]
> Then I opened the first file, the one that I had just copied, but I did not get the popup.
> I'm running TeXShop v.5.27 on a 2012 MacBook Pro with the Mojave OS. The first TeX file was started around January 23, 2024 and last edited on February 4. I updated TeXShop to v. 5.27 on, or shortly after February 12, and I'm wondering if that update I made to TeXShop was the cause of the popup. Otherwise, I don't know why the popup appeared.
> I responded with  the OK button, and I was able to continue without any further problems.
> Bill


Have you tried to copy the file again and opening the new file? The message comes up if, when reading in the file the finds a byte combination that is illegal in UTF-8 Unicode encoding; UTF-8 Unicode is the default encoding for TeXShop out of the box but can be changed in TeXShop->Settings but we recommend NOT changing that. Do NOT edit that file! Please read the Help->File Encoding and TeXShop document in TeXShop for our recommendations and explanation of encoding.

Good Luck,

Herb Schulz
herbs2 at mac.com

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