From: pub...@yeti.selfip.net
To: bug-bash@gnu.org
Configuration Information [Automatically generated, do not change]: FALSE!!!
Machine: i586
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='i586'
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i586-mandriv a-linux-gnu'
-DCONF_VENDOR='mandriva' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash'
-DSHELL -DHAVE_CONFIG_H -I. -I.. -I../include -I../lib -O2 -g -pipe
-Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffe
r-size=4 -fomit-frame-pointer -march=i586 -mtune=generic
-fasynchronous-unwind-tables
uname output: Linux sp-ausy6.spna 2.6.27.37-desktop-1mnb #1 SMP Tue Oct 13
13:33:31 EDT 2009 i686 Intel(R) Core(TM)2 CPU T5500 @ 1.66GHz
GNU/Linux
Machine Type: i586-mandriva-linux-gnu
Bash Version: 3.2
Patch Level: 19
Release Status: release
The above generated output is FALSE, as proven by:
[y...@localhost ~]$ ls -l /proc/$$/ | grep exe
lrwxrwxrwx 1 yves yves 0 2010-06-23 10:30 exe -> /opt/bash-4.1/bin/bash*
This is a self-compiled latest version (4.1) configured this way:
./configure --prefix=/opt/bash-4.1 --enable-alias \
--enable-arith-for-command --enable-array-variables \
--enable-bang-history --enable-brace-expansion \
--enable-casemod-attributes --enable-casemod-expansions \
--enable-command-timing --enable-cond-command \
--enable-cond-regexp --enable-coprocesses \
--enable-directory-stack --enable-dparen-arithmetic \
--enable-extended-glob --enable-history --enable-job-control \
--enable-multibyte --enable-net-redirections \
--enable-process-substitution --enable-progcomp \
--enable-prompt-string-decoding --enable-readline \
--enable-select --with-installed-readline
(installed readline was not used however, as it is too old)
and run this way while in the legacy bash-3.2 in gnome-terminal:
exec /opt/bash-4.1/bin/bash
Description:
I want to generate a "bash-proof" string by enclosing it in
single quotes and managing enclosed single quotes. Basically, I
would replace << word1 word'2 >> with << 'word1 word'"'"'2' >>.
I can't find the syntax for doing this with the ${p//x/y}
substitution (see example below).
Actually, command #4 /does/ produce the right substitution, but
as soon as I enclose it in double quotes, extra double-quotes
appear, and I can't see the logic behind it, nor the logic
behind my further tests' results.
Repeat-By:
[y...@localhost 1]$ test="word1 word'2"
[y...@localhost 2]$ echo "$test"
word1 word'2
[y...@localhost 3]$ echo ${test//'/'"'"'}
> ^C
[y...@localhost 4]$ echo ${test//"'"/"'\"'\"'"}
word1 word'"'"'2
[y...@localhost 5]$ echo "${test//"'"/"'\"'\"'"}"
word1 word"'"'"'"2
[y...@localhost 6]$ echo "${test//"'"/'\"'\"'}"
> ^C
[y...@localhost 7]$ echo "${test//"'"/\'\"\'\"\'}"
word1 word\'"\'"\'2
