Well, here's what I decided to do:
Firstly, a big thanks to all who replied with their suggestions.
Now, a listing of my /usr/share/fonts/truetype/msttcorefonts/ directory still has all of the fonts from the initial installation, and some, told by time stamp, from subsequent reinstall attempts.
But I was still receiving nag mail from logwatch about the update failure.
So now I head over to /var/lib/update-notifier/package-data-downloads/ and get this:
Code:
username@perl:/var/lib/update-notifier/package-data-downloads$ ls -al
total 12
drwxr-xr-x 3 root root 4096 Nov 18 02:12 .
drwxr-xr-x 4 root root 4096 Nov 20 19:40 ..
drwxr-xr-x 2 root root 4096 Nov 20 02:21 partial
-rw-r--r-- 1 root root 0 Nov 20 02:21 ttf-mscorefonts-installer.failed
username@perl:/var/lib/update-notifier/package-data-downloads$
A listing of partial:
Code:
username@perl:/var/lib/update-notifier/package-data-downloads$ ls -al partial/
total 2652
drwxr-xr-x 2 root root 4096 Nov 20 02:21 .
drwxr-xr-x 3 root root 4096 Nov 18 02:12 ..
-rw-r--r-- 1 root root 969 Nov 20 02:21 andale32.exe.FAILED
(several more listings here)
-rw-r--r-- 1 root root 185072 Aug 15 2002 webdin32.exe
username@perl:/var/lib/update-notifier/package-data-downloads$
And since my fonts directory already has these fonts, I'm calling the partial as leftovers, and wisely tossed after three days.
Code:
username@perl:/var/lib/update-notifier/package-data-downloads$ sudo rm partial/*.*
username@perl:/var/lib/update-notifier/package-data-downloads$
username@perl:/var/lib/update-notifier/package-data-downloads$ sudo rmdir partial/
username@perl:/var/lib/update-notifier/package-data-downloads$
username@perl:/var/lib/update-notifier/package-data-downloads$ sudo rm ttf-mscorefonts-installer.failed
username@perl:/var/lib/update-notifier/package-data-downloads$
So now the previous directory has been scrubbed, ttf-mscorefonts-installer shows as installed, and the fonts directory still has the fonts.
And since there are fonts, and not code designed to write to disks or whatever, I'm calling my issue fixed.
Also, new installs down here at Central will be done with the 3.6 version: https://packages.debian.org/jessie/t...onts-installer

Originally Posted by
howefield
...
Yes, sounds so easy, doesn't it
This is why I downloaded the 3.6 deb package and install it with apt.
Oh, I'm sure that there's much more to this than I'll ever know. 
Thanks again everyone!
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