Bug 1007926 - Bash outputs functions with multi-line here-strings incorrectly
Summary: Bash outputs functions with multi-line here-strings incorrectly
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: bash
Version: 6.5
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Ondrej Oprala
QA Contact: Martin Frodl
URL:
Whiteboard:
Depends On:
Blocks: 1116299 1116303
TreeView+ depends on / blocked
 
Reported: 2013-09-13 14:56 UTC by Nikolai Kondrashov
Modified: 2014-10-14 07:09 UTC (History)
5 users (show)

Fixed In Version: bash-4.1.2-16.el6
Doc Type: Bug Fix
Doc Text:
Clone Of:
: 1116299 1116303 (view as bug list)
Environment:
Last Closed: 2014-10-14 07:09:51 UTC
Target Upstream Version:


Attachments (Terms of Use)
bash-4.1-multiline_heredoc.patch (4.24 KB, patch)
2014-02-20 15:53 UTC, Petr Stodulka
no flags Details | Diff


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2014:1503 0 normal SHIPPED_LIVE bash bug fix update 2014-10-14 01:28:07 UTC

Description Nikolai Kondrashov 2013-09-13 14:56:59 UTC
Description of problem:
Bash includes quotes used in multi-line here-strings into the function output produced with "declare" or "set", thus corrupting the declaration. This breaks, for example, copying functions under another name, or transferring them to another shell.

Version-Release number of selected component (if applicable):
bash-4.1.2-15.el6_4.x86_64

How reproducible:
Always

Steps to Reproduce:
Execute the following:
bash -c 'f() { cat <<<"line1'$'\n''line2"; }; declare -f f'

Actual results:
f () 
{ 
    cat <<< $'"line1\nline2"'
}

Expected results:
f () 
{ 
    cat <<< "line1
line2"
}

Additional info:
This works on RHEL7 with bash-4.2.45-2.el7.x86_64.

Comment 1 Nikolai Kondrashov 2013-09-13 15:08:56 UTC
Sorry, the first sentence of the description is unclear and incorrect. I'll try to rephrase.

The problem is that bash quotes the quotes used in multi-line here-strings in the printed functions, thus including them into the resulting here-string.

Comment 3 Petr Stodulka 2014-02-20 15:53:53 UTC
Created attachment 865588 [details]
bash-4.1-multiline_heredoc.patch

Patch in attachment created from "print_cmd.c" in bash-4.2.

Comment 4 Branislav Náter 2014-05-30 09:03:37 UTC
Reproducer available, qa_ack+ for rhel-6.6

Comment 7 errata-xmlrpc 2014-10-14 07:09:51 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2014-1503.html


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