vim Scratchpad

vim Help
- help 
- help <String>Tab
- help grep
cnext, cprev, cfile

vimgrep pattern files

Repeat a character n times without typing
<C-o>80i-<Esc>

Custom maps
Buffer
nmap H :bn<CR>
nmap L :ls<CR>
nmap HB :bn 
nmap HD :bdel 

w: moves across word seperator; b will move backwards
W: will move to the next empty space

:h normal-index # all the commands in the normal mode
# check out the watchdog plugin that adds useful information the command line below

0: move to the start of the line
^: move the start of the first word in the line
$: move to the end of current line
-: move to the beginning of the last line
<CR>: move to the start of the next line
<Number>% : move to n% of the file
# do calculations with bc. Replace the current line
!!bc
# with 2 decimal places 41.57
# pretty json 
!python -m json.tool

#Find the various mappings of the command
: help index
|CTRL-B|        CTRL-B          1  scroll N screens Backwards
|CTRL-F|        CTRL-F          1  scroll N screens Forward
|CTRL-E|        CTRL-E             scroll N lines upwards (N lines Extra)
|CTRL-U|        CTRL-U             scroll N lines Upwards (default: half a
|CTRL-Y|        CTRL-Y             scroll N lines downwards

Regex
Except . and * almost all metcharacters require an escape
prefix the regex with \v and all the metachars are magic chars with special meaning and need not be escaped.
nnoremap / /\v

vim regex word boundary are \< and \>
* and # : next and previous match of the current char

yankmatches.vim

Search Replace
# relative and absolute range selection
.,+33s/dfg/df
# pattern based range selection
\<TAG\>,\<\/TAG\>s/sdf/dff

Global Command : apply the command on a pattern
:g /PATTERN/ <Any Colon command>
:g /PATTERN/ :normal <Any Normal command>

copy
y/<>

Copy text objects
yaw (when in middle of a word, copy the full word)
yaW
yas (sentence)
yap (paragrap)
Yank between delimiters (delimited objects)
ya{
ya[
ya'

sort and join