On Thu, Feb 11, 2021 at 10:15 AM M Douglas McIlroy
[off-list ref] wrote:
Many thanks for so thoroughly exploring my query.
You are very welcome.
I have long lived with the limitations of invoking Windows apps from
Cygwin. Fortuitously I could work around them without resorting to
"command prompt", though clearly that isn't always possible. And you
have shed light on the difficulty of the opposite: invoking Cygwin
apps from Windows.
Were you able to resolve the situation (for instance, by staying
entirely within the Cygwin ecosystem for `git` and `ed`)?