lab: ex-commands and configuring vim in the vimrc

agenda
* the ex-commandline
* how options work
* the vimrc
* common vimrc options
* common ex-commands & address ranges


# the ex-commandline
<up>    previous history entry for the ex-commandline
<down>  next history entry for the ex-commandline
<tab>   complete current command (dos-like)
ctrl-L  complete current command (linux-like)
ctrl-D  show all possible completions
ctrl-W  deletes the word before cursor
ctrl-U  deletes the whole line before cursor

# how options work
:set all          list all options
:options          list all options with a description
:set [option]?    query current value of option
:set [option]!    invert boolean option
:set [option]...  set one or more options

# the vimrc
~/.vimrc        vimrc location on linux
[vim]/_vimrc    vimrc location on windows
:help vimrc     more detailed explanation of vimrc lookup path
source $VIMRC   load current vimrc

" comment
:set number               show line numbers
:set splitbelow           new splits open below current pane
:set splitright           new splits open right of current pane
:set showcmd              show command buffer
:set tabstop=4            show 4 spaces per tab
:set backup               create a backup~ for every file you save
:set swapfile             create a swapfile while editing a file
:set wrap linebreak       smarter line wrapping, keep words in one piece
:set nowrap               disable line wrapping
:set sidescroll=1         scroll right/left a single character at a time
:set sidescrolloff=10     start scrolling before the window edge
:let loaded_matchparen=0  don't highlight matching parentheses

# commands that take a range
:delete
:yank
:put
:copy
:move
:substitute
:normal

# ranges
.         current line
.,.+[n]   current line + [n] lines
[n],[m]   line [n] up to [m]
0,$       beginning of document up to end of document
/[regex]/ regex match
%         whole document