Re: [PATCH] Introduce the config variable pack.packSizeLimit

Johannes Schindelin [off-list ref] writes:

"git pack-objects" has the option --max-pack-size to limit the file
size of the packs to a certain amount of bytes.  On platforms where
the pack file size is limited by filesystem constraints, it is easy
to forget this option, and this option does not exist for "git gc"
to begin with.

So introduce a config variable to set the default maximum, but make
this overrideable by the command line.

The intention is good and all makes sense.

+test_expect_success \
+    'honor pack.packSizeLimit' \
+    'git config pack.packSizeLimit 200 &&
+     packname_4=$(git pack-objects test-4 <obj-list) &&
+     test 3 = $(ls test-4-*.pack | wc -l)'
+

Where does "3" come from, and what could break it?