> Thank you for informing, Here is an updated patch against current master
Patch applies cleanly, compiles, "make check" is okay, but given that the feature is not tested...
Feature should be tested somewhere.
ISTM that command-line switches with optional arguments should be avoided: This feature is seldom used (hmmm... 2 existing instances), because it interferes with argument processing if such switches are used as the last one. It is only okay with commands which do not expect arguments. For backward compatibility, this suggests to add another switch, eg --insert-multi=100 or whatever, which would possibly default to 100. The alternative is to break compatibility with adding a mandatory argument, but I guess it would not be admissible to committers.
Function "atoi" parses "1zzz" as 1, which is debatable, so I'd suggest to avoid it and use some stricter option and error out on malformed integers.
The --help output does not document the --inserts argument, nor the documentation.
done
There is an indendation issue within the while loop.
Given that the implementation is largely a copy-paste of the preceding function, I'd suggest to simply extend it so that it takes into account the "multi insert" setting and default to the previous behavior if not set.
At first i also try to do it like that but it seems the function will became long and more complex to me