heredoc seems to parse contents even with the quoted delimiter in shell prompt
Machine: x86_64
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS: -g -O2
-fdebug-prefix-map=/build/bash-a6qmCk/bash-5.0=.
-fstack-protector-strong -Wformat -Werror=format-security -Wall
-Wno-parentheses -Wno-format-security
uname output: Linux EliteBook 5.4.0-42-generic #46-Ubuntu SMP Fri Jul
10 00:24:02 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
Machine Type: x86_64-pc-linux-gnu
Bash Version: 5.0
Patch Level: 17
Release Status: release
if i use "test.sh" file for running shell script like this, there are
no error messages appear
bash$ cat test.sh
#!/bin/bash
cat << "EOF"
this is a test comment
$(info $(foo ${bar)))
EOF
bash$ ./test.sh # no error messages appear
this is a test comment
$(info $(foo ${bar)))
---
if i use the same script in shell prompt then strange error messages appear
bash$ cat << "EOF"
this is a test comment
$(info $(foo ${bar)))
EOF
bash: command substitution: line 798: unexpected EOF while looking for
matching `}'
bash: command substitution: line 799: syntax error: unexpected end of file
bash: command substitution: line 798: unexpected EOF while looking for
matching `}'
bash: command substitution: line 799: syntax error: unexpected end of file
this is a test comment
$(info $(foo ${bar)))
multi-line command history does not work when new terminal opened
Machine: x86_64 OS: linux-gnu Compiler: gcc Compilation CFLAGS: -g -O2 -fdebug-prefix-map=/build/bash-a6qmCk/bash-5.0=. -fstack-protector-strong -Wformat -Werror=format-security -Wall -Wno-parentheses -Wno-format-security uname output: Linux EliteBook 5.4.0-42-generic #46-Ubuntu SMP Fri Jul 10 00:24:02 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux Machine Type: x86_64-pc-linux-gnu Bash Version: 5.0 Patch Level: 17 Release Status: release I have enabled the shell options for multi-line command history like this shopt -s lithist shopt -s cmdhist and it works well in current terminal bash$ history 8651 echo history test 1 8652 echo history test 2 8653 echo history test 3 8654 cat << EOF 111 222 # multi-line command history works well 333 EOF 8655 history --- if i opened new terminal then the multi-line commands all changed to single lines like this bash$ history 7819 echo history test 1 7820 echo history test 2 7821 echo history test 3 7822 cat << EOF 7823 111 # the multi-line commands changed to single lines 7824 222 7825 333 7826 EOF 7827 history
