Problem:    Crash when using mkdir() with "R" flag in compiled function.
Solution:   Reserve a variable for deferred function calls.  Handle more than
            one argument.

Problem:    Cursor wrong if inserting before line with virtual text above.
Solution:   Add the width of the "above" virtual text to the cursor position.
            (issue #11084)

Problem:    Cannot put virtual text above a line.
Solution:   Add the "above" value for "text_align".

Problem:    No error when a custom completion function returns something else
            than the expected list.
Solution:   Give an error. (closes #11100)

Problem:    CI: running tests in parallel causes flakiness.
Solution:   Reorganize the MS-Windows runs. (Ken Takata, closes #11101)

Problem:    Compiler warning for uninitialized variable.
Solution:   Initialize it.

Problem:    gitignore files are not recognized.
Solution:   Add patterns for the gitignore filetype. (closes #11102)

Problem:    Coverity warns for not checking allocation failure.
Solution:   Check that allocating a list or blob succeeded.

Problem:    Crash when using for loop variable in closure.
Solution:   Check that the variable wasn't deleted. (issue #11094)