===============================
Commands
===============================

whoami

---

(program
  (command (command_name (word))))

===============================
Commands with arguments
===============================

cat file1.txt
git diff --word-diff=color -- file1.txt file2.txt

---

(program
  (command (command_name (word)) (word))
  (command (command_name (word)) (word) (word) (word) (word) (word)))

===============================
Quoted command names
===============================

"$a/$b" c

---

(program
  (command
    (command_name (string (simple_expansion (variable_name)) (simple_expansion (variable_name))))
    (word)))

===============================
Commands with numeric arguments
===============================

exit 1

---

(program
  (command (command_name (word)) (word)))

===================================
Commands with environment variables
===================================

VAR1=1 ./script/test
VAR1=a VAR2="ok" git diff --word-diff=color

---

(program
  (command
    (variable_assignment (variable_name) (word))
    (command_name (word)))
  (command
    (variable_assignment (variable_name) (word))
    (variable_assignment (variable_name) (string))
    (command_name (word))
    (word)
    (word)))

===================================
Empty environment variables
===================================

VAR1=
VAR2= echo

---

(program
  (variable_assignment (variable_name))
  (command (variable_assignment (variable_name)) (command_name (word))))

===============================
File redirects
===============================

whoami > /dev/null
cat a b > /dev/null
2>&1 whoami

---

(program
  (redirected_statement
    (command (command_name (word)))
    (file_redirect (word)))
  (redirected_statement
    (command (command_name (word)) (word) (word))
    (file_redirect (word)))
  (command
    (file_redirect (file_descriptor) (word))
    (command_name (word))))

===============================
File redirects (noclobber override)
===============================

whoami >| /dev/null
cat a b >| /dev/null

---

(program
  (redirected_statement
    (command (command_name (word)))
    (file_redirect (word)))
  (redirected_statement
    (command (command_name (word)) (word) (word))
    (file_redirect (word))))

===============================
Heredoc redirects
===============================

node <<JS
console.log("hi")
JS

bash -c <<JS
echo hi
JS

---

(program
  (redirected_statement
    (command (command_name (word)))
    (heredoc_redirect (heredoc_start)))
  (heredoc_body)
  (redirected_statement
    (command (command_name (word)) (word))
    (heredoc_redirect (heredoc_start)))
  (heredoc_body))

===============================
Heredocs with variables
===============================

node <<JS
a $B ${C}
JS

exit

---

(program
  (redirected_statement
    (command (command_name (word)))
    (heredoc_redirect (heredoc_start)))
  (heredoc_body
    (simple_expansion (variable_name))
    (expansion (variable_name)))
  (command (command_name (word))))

=================================
Heredocs with file redirects
================================

cat <<EOF > $tmpfile
a $B ${C}
EOF

wc -l $tmpfile

---

(program
  (redirected_statement
    (command (command_name (word)))
    (heredoc_redirect (heredoc_start))
    (file_redirect (simple_expansion (variable_name))))
  (heredoc_body
    (simple_expansion (variable_name))
    (expansion (variable_name)))
  (command
    (command_name (word))
    (word)
    (simple_expansion (variable_name))))

=================================
Heredocs with pipes
================================

one <<EOF | grep two
three
EOF

---

(program
  (pipeline
    (redirected_statement
      (command (command_name (word)))
      (heredoc_redirect (heredoc_start)))
    (command (command_name (word)) (word)))
    (heredoc_body))

======================================
Heredocs with escaped expansions
======================================

cat  << EOF
DEV_NAME=\$(lsblk)
EOF

---

(program (redirected_statement (command (command_name (word))) (heredoc_redirect (heredoc_start))) (heredoc_body))

======================================
Quoted Heredocs
======================================

cat << 'EOF'
a=$b
EOF

cat << "EOF"
a=$b
EOF

cat <<"END OF FILE"
hello,
world
END OF FILE

cat << \EOF
EOF

---

(program
  (redirected_statement (command (command_name (word))) (heredoc_redirect (heredoc_start))) (heredoc_body)
  (redirected_statement (command (command_name (word))) (heredoc_redirect (heredoc_start))) (heredoc_body (simple_expansion (variable_name)))
  (redirected_statement (command (command_name (word))) (heredoc_redirect (heredoc_start))) (heredoc_body)
  (redirected_statement (command (command_name (word))) (heredoc_redirect (heredoc_start))) (heredoc_body))

==========================================
Heredocs with indented closing delimiters
==========================================

usage() {
	cat <<-EOF
		Usage: ${0##*/} FOO BAR
	EOF
}

---

(program
  (function_definition
    (word)
    (compound_statement
      (redirected_statement
        (command (command_name (word)))
        (heredoc_redirect (heredoc_start)))
      (heredoc_body (expansion (special_variable_name) (word))))))