Problem:    win_execute() unexpectedly returns number zero when failing.
Solution:   Return an empty string. (closes vim/vim#7665)
https://github.com/vim/vim/commit/37487e16da7877129edee8d11b9b7f5c8df312c6

Problem:    Ruler is not updated if win_execute() moves cursor.
Solution:   Update the status line. (closes vim/vim#5022)
https://github.com/vim/vim/commit/345f28df5482cd35f5fa74b06443376379f113b0

Problem:    Win_execute() does not work in other tab. (Rick Howe)
Solution:   Take care of the tab. (closes vim/vim#4792)
https://github.com/vim/vim/commit/820680b9ff1de8699156c7b060f97e5c0b87ad15

Problem:    Win_execute() test fails.
Solution:   Adjust the expected error number.  Move to popup test.
https://github.com/vim/vim/commit/2d247849ce612050ba1085df806746b23be1f0a3

Problem:    Win_execute() is not implemented yet.
Solution:   Implement it.
https://github.com/vim/vim/commit/868b7b6712ea4f2232eeeae18c5cbbbddf2ee84d

Problem:    Non-silent execute() resets display column to zero.
Solution:   Keep the display column as-is.
https://github.com/vim/vim/commit/446e7a3cd36b2de7d559f167eb5795d1e1cd3ddb

Problem:    Execute() always resets display column to zero. (Sha Liu)
Solution:   Don't reset it to zero, restore the previous value. (closes vim/vim#3669)
https://github.com/vim/vim/commit/10ccaa17ec8b2be1132fd19059e1cd5fb5c902c4

Problem:    evalcmd() has a confusing name.
Solution:   Rename to execute().  Make silent optional.  Support a list of
            commands.

https://github.com/vim/vim/commit/79815f1ec77406f2f21a618c053e5793b597db7a