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From: Sherwood Wang <sherwood@wang.onl>
Newsgroups: gnu.bash.bug
Subject: An exported function is malformed if it contains a nested function definition with heredoc
Date: Fri, 06 Mar 2020 22:48:05 +0800
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Approved: bug-bash@gnu.org
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Configuration Information [Automatically generated, do not change]:
Machine: x86_64
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS: -g -O2 -fdebug-prefix-map=/build/bash-2bxm7h/bash-
5.0=. -fstack-protector-strong -Wformat -Werror=format-security -Wall
-Wno-parentheses -Wno-format-security
uname output: Linux hostname 4.19.0-8-amd64 #1 SMP Debian 4.19.98-1
(2020-01-26) x86_64 GNU/Linux
Machine Type: x86_64-pc-linux-gnu

Bash Version: 5.0
Patch Level: 3
Release Status: release

Description:

	A function containing a nested function definition with heredoc
	cannot be serialized into the environment variable correctly,
	and leads to failures in a subshell.

	See also: 
https://stackoverflow.com/questions/60564674/exporting-a-function-with-a-nested-function-definition-and-heredoc-in-bash

Repeat-By:

	Create a script:

		#!/bin/bash
		
		f() {
		    g() {
		        cat <<EOF
		EOF
		    }
		
		    g
		}
		
		export -f f
		bash -c ':'

	Executing it yields the following error:
		bash: f: line 8: syntax error: unexpected end of file
		bash: error importing function definition for `f'