Problem: Toupper and tolower don't work properly for Turkish when 'casemap'
contains "keepascii". (Bjorn Linse)
Solution: When 'casemap' contains "keepascii" use ASCII toupper/tolower.
Problem: Toupper and tolower don't work properly for Turkish when 'casemap'
is empty. (Bjorn Linse)
Solution: Check the 'casemap' options when deciding how to upper/lower case.
Problem: Some tests have a one or three second wait.
Solution: Reset the 'showmode' option. Use a test time of one to disable
sleep after an error or warning message.
Problem: 'formatprg' is a global option but the value may depend on the
type of buffer. (Sung Pae)
Solution: Make 'formatprg' global-local. (closes#1380)
Problem: when calling an operator function when 'linebreak' is set, it is
internally reset before calling the operator function.
Solution: Restore 'linebreak' before calling op_function(). (Christian
Brabandt)
Problem: When using an Ex command for 'keywordprg' it is escaped as with a
shell command. (Romain Lafourcade)
Solution: Escape for an Ex command. (closes#1175)
Problem: Crash when closing a buffer while Visual mode is active.
(Dominique Pelle)
Solution: Adjust the position before computing the number of lines.
When closing the current buffer stop Visual mode.
