Manual Generation: Abstracts for subcommands missing in single page mode

[Nef10]

When I run swift package plugin generate-manual in the default single page mode, I was expecting that the resulting man page would include the abstract of the sub commands. The multi-page mode includes these in the different pages as expected. Without it, the help just has the sub command name and all it's flags (including the description for the flags) - but it doesn't help you in understanding when to use which subcommand.

ArgumentParser version: 1.2.2 Swift version: 5.7.2

Checklist

• [x] If possible, I've reproduced the issue using the main branch of this package
• [x] I've searched for existing GitHub issues

Steps to Reproduce

swift package plugin generate-manual

Expected behavior

Example output for a check sub-command:

.It Em check
Parses a ledger and prints any errors it finds
.Bl -tag -width 6n
.It Ar file
The file to parse.
.It Fl q , -quiet
Don't print errors, only indicate via exit code.

Actual behavior

Example output for a check sub-command:

.It Em check
.Bl -tag -width 6n
.It Ar file
The file to parse.
.It Fl q , -quiet
Don't print errors, only indicate via exit code.