Lab: motions and text objects

agenda
* motions
* commands
* vim additions
* help pages
* discussion


# vi motions
0    start of line
^    start of line
$    end of line

# word motions [a-zA-Z0-9_]
w    next word
b    previous word
e    end of word

# WORD motions (based on whitespace)
W    next WORD
B    previous WORD
E    end of WORD

# character based motions
f[char]   forward to [char] (inclusive), mnemonic forward
t[char]   forward to [char] (exclusive), mnemonic up to
;         next match
,         previous match

# text object motions
{    previous paragraph
}    next paragraph
%    matching pair of ()[]{}

# combine motions with commands
dw   delete word
cw   change word
yw   yank word

# some examples
d0
d^
d$
dw
dW
df.
dt(
d%
d{
d}
dG

############
# vim only #
############

# vim motions
shift-left     word right (b)
shift-right    word left  (w)
F              backwards to character inclusive
T              backwards to character exclusive
ge             backwards to end of word
gE             backwards to end of WORD

# additional command combinations
dgg            delete from cursor to document start
d)             delete sentence
d<home>        delete from cursor to beginning of line
d<end>>        delete from cursor to end of line

# commands to change case
g~             invert case
gu             lower case
gU             upper case

# command applied to a single line
gUU
guu
g~~

# change case with motion
g~w
guw
gUW

# vim text objects
ciw caw    change word [a-zA-Z0-9_]
ciW caW    change WORD (based on whitespace)
cip cap    change paragraph
ci' ca'    change '' contents
ci" ca"    change "" contents
ci[ ca[    change [] contents
ci( ca(    change () contents
ci{ ca{    change {} contents

# help
:help motion
:help motion.txt
:help text-objects

# ways to use a motion
[count][command][motion]
[command][count][motion]
[command][motion]
[count][motion]
[motion]