TODO

* cthelper

[done] A way to propagate fatal error messages back to PuTTYcyg to display in a message box

BUG: Duplicate session brings up dialog on cygterm terminals using the user's default shell.

BUG: When running an arbitrary command, PuTTYcyg closes one character after EOF.

Misfeature: In Cygwin ps output, the cthelper process does not show with which TTY it is associated.

Flow control stop (^S) should be more instantaneous

* PuTTY cygterm backend

hide the Port editbox

[done] allow setting a default command of "-" or allow empty command to launch the user's shell

* PuTTY (not related to cygterm backend)

[done] add Ctrl-/ map to C-_

[done] add Shift-Enter, Ctrl-Enter map to LINEFEED

[done] add Ctrl-Backspace map same as Shift-Backspace (alternate 0x08 or 0x7F)

[done] PuTTY wish alt-metabit

add Alt modifier to mouse location reporting (low-priority)

add ssh-agent support to PuTTY (?) -or- add pageant support to openssh (Cygwin)

add cursor styles vertical-half-block and horizontal-half-block 

PuTTY wish key-mapping

PuTTY wish portable-keyboard