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I've been working with Vim on two different machines, one running Ubuntu 10.04 (gVim) and the other Snow Leopard (MacVim). I copied my .vimrc file and .vim folder to both, and noticed a few minor differences. 2 questions:

1 . I used Drew Neil's vimcast on indentation and added the following to my .vimrc:

nmap <D-[> <<
nmap <D-]> >>
vmap <D-[> <gv
vmap <D-]> >gv

Which maps Cmd+[ and Cmd+] to indent in/out. In Linux I replaced 'D' with 'C', so that it works with Ctrl+[ / ]. All of that works on both machines, only that on Linux, hitting the Escape key after indenting performs an un-indent action. Any thoughts?

2 . I added some script I found to my .vimrc that enables shifting rows (normal and visual mode) up/down by holding Ctrl and using the up/down keys. It works great on Linux, but doesn't work at all on Mac, and I can't understand why. See my .vimrc file here.

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can you formulate it as one or two questions? –  Peter Mortensen Aug 18 '10 at 6:49
4  
On your Linux system, are you using Vim in GUI-mode or in tty-mode (i.e. through a terminal program like xterm, rxvt, Gnome Terminal, et cetera)? Your problem likely is due to the fact that Escape and Control-[ share the same character representation (ASCII 27) and are indistinguishable in a tty-based environment. The GUI version of Vim should be able to distinguish Escape from Control-[, but it may choose not to. –  Chris Johnsen Aug 18 '10 at 7:06
    
I use the gui version on both linux and mac (gnome-vim and macvim). Perhaps I'll map it to another key (Ctrl+T / Ctrl+Shift+T). –  sa125 Aug 18 '10 at 7:56

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