# string match -r -v "c.*" dog can cat diz
dog
diz
exit 0

# string match -q -r -v "c.*" dog can cat diz
exit 0

# string match -v "c*" dog can cat diz
dog
diz
exit 0

# string match -q -v "c*" dog can cat diz
exit 0

# string match -v "d*" dog dan dat diz
exit 1

# string match -q -v "d*" dog dan dat diz
exit 1

# string match -r -v x y
y
exit 0

# string match -r -v x x
exit 1

# string match -q -r -v x y
exit 0

# string match -q -r -v x x
exit 1

# string length "hello, world"
12

# string length -q ""
zero length

# string sub --length 2 abcde
ab

# string sub -s 2 -l 2 abcde
bc

# string sub --start=-2 abcde
de

# string split . example.com
example
com

# string split -r -m1 / /usr/local/bin/fish
/usr/local/bin
fish

# string split "" abc
a
b
c

# seq 3 | string join ...
1...2...3

# string trim " abc  "
abc

# string trim --right --chars=yz xyzzy zany
x
zan

# echo \x07 | string escape
\cg

# string match "?" a
a

# string match "a*b" axxb
axxb

# string match -i "a??B" Axxb
Axxb

# echo "ok?" | string match "*\?"
ok?

# string match -r "cat|dog|fish" "nice dog"
dog

# string match -r "(\d\d?):(\d\d):(\d\d)" 2:34:56
2:34:56
2
34
56

# string match -r "^(\w{2,4})\g1\$" papa mud murmur
papa
pa
murmur
mur

# string match -r -a -n at ratatat
2 2
4 2
6 2

# string match -r -i "0x[0-9a-f]{1,8}" "int magic = 0xBadC0de;"
0xBadC0de

# string replace is was "blue is my favorite"
blue was my favorite

# string replace 3rd last 1st 2nd 3rd
1st
2nd
last

# string replace -a " " _ "spaces to underscores"
spaces_to_underscores

# string replace -r -a "[^\d.]+" " " "0 one two 3.14 four 5x"
0 3.14 5 

# string replace -r "(\w+)\s+(\w+)" "\$2 \$1 \$\$" "left right"
right left $

# string replace -r "\s*newline\s*" "\n" "put a newline here"
put a
here

# string replace -r -a "(\w)" "\$1\$1" ab
aabb

# string length
missing argument returns 1

# string match -r -v "[dcantg].*" dog can cat diz
no regexp invert match

# string match -v "???" dog can cat diz
no glob invert match

# string match -rvn a bbb
1 3

# string repeat -n 2 "foo"
foofoo

# string repeat --count 2 "foo"
foofoo

# echo foo | string repeat -n 2
foofoo

# string repeat -n2 -q "foo"
exit 0

# string repeat -n2 --quiet "foo"
exit 0

# string repeat -n0 "foo"
exit 1

# string repeat -n0
exit 1

# string repeat -m0
exit 1

# string repeat -n1 -N "there is "
there is no newline

# string repeat -n1 --no-newline "there is "
there is no newline

# string repeat -n10 -m4 "foo"
foof

# string repeat -n10 --max 5 "foo"
foofo

# string repeat -n3 -m20 "foo"
foofoofoo

# string repeat -m4 "foo"
foof

# string repeat ""
string repeat empty string failed

# string repeat -n3 ""
string repeat empty string failed

# string match -f x abc dxf xyz jkx x z
dxf
xyz
jkx
x

# string match x abc dxf xyz jkx x z
x

# string match --filter -r "a*b[xy]+" abc abxc bye aaabyz kaabxz abbxy abcx caabxyxz
abxc
bye
aaabyz
kaabxz
abbxy
caabxyxz

# string match -r "a*b[xy]+" abc abxc bye aaabyz kaabxz abbxy abcx caabxyxz
abx
by
aaaby
aabx
bxy
aabxyx

# string match --filter -r "a*b([xy]+)" abc abxc bye aaabyz kaabxz abbxy abcx caabxyxz
abxc
x
bye
y
aaabyz
y
kaabxz
x
abbxy
xy
caabxyxz
xyx

# string match -r "a*b([xy]+)" abc abxc bye aaabyz kaabxz abbxy abcx caabxyxz
abx
x
by
y
aaaby
y
aabx
x
bxy
xy
aabxyx
xyx