scp completion doesn't follow readline completion-ignore-case state

[Martin-Schendel]

This issue has existed since 2016 Issue #100

scp completion does not respect completion-ignore-case. From inspection it looks like _scp_local_files generates matches using ls $cur*, which relies on shell globbing and therefore remains case-sensitive.

As a result, Readline settings such as completion-ignore-case are bypassed for local path completion with scp.

Would maintainers be open to switching _scp_local_files to use _filedir so that Readline completion behavior is respected?

[akinomyoga]

Please comment on the existing issue #100.