1	#!/usr/bin/env bash
2
3	#### ~ expansion in assignment
4	HOME=/home/bob
5	a=~/src
6	echo $a
7	## stdout: /home/bob/src
8
9	#### ~ expansion in readonly assignment
10	# dash fails here!
11	# http://stackoverflow.com/questions/8441473/tilde-expansion-doesnt-work-when-i-logged-into-gui
12	HOME=/home/bob
13	readonly const=~/src
14	echo $const
15	## stdout: /home/bob/src
16	## BUG dash stdout: ~/src
17
18	#### No tilde expansion in word that looks like assignment but isn't
19	# bash and mksh mistakenly expand here!
20	# bash fixes this in POSIX mode (gah).
21	# http://lists.gnu.org/archive/html/bug-bash/2016-06/msg00001.html
22	HOME=/home/bob
23	echo x=~
24	## stdout: x=~
25	## BUG bash/mksh stdout: x=/home/bob
26
27	#### tilde expansion of word after redirect
28	HOME=$TMP
29	echo hi > ~/tilde1.txt
30	cat $HOME/tilde1.txt | wc -c
31	## stdout: 3
32	## status: 0
33
34	#### other user
35	echo ~nonexistent
36	## stdout: ~nonexistent