Gblackburn/regression target sendkeys 00915

[GBlackburnMicrosoft]

This is reproduction of #915 based off of #915.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.39%. Comparing base (9efdf97) to head (ca4c994).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #917   +/-   ##
=======================================
  Coverage   70.39%   70.39%           
=======================================
  Files          26       26           
  Lines        1956     1956           
  Branches      409      409           
=======================================
  Hits         1377     1377           
  Misses        453      453           
  Partials      126      126           

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[tony]

@GBlackburnMicrosoft This now passes via:

tmuxp v1.42.0 (PyPI, changes, release), via libtmux v0.34.0 (PyPI, changes, release)

[tony]

Closing this per merge last week of tmuxp v1.42.0 (PyPI, changes, release), via libtmux v0.34.0 (PyPI, changes, release)

Also close #916.