bash 3.2, escape sequences

[Sebastian Kapfer]

Hi Chet, hi bug-bash readers,

I'm not quite getting the changes in bash's handling of escape
sequences.


sk@nexus(~)> echo '\a'
'\a

Ouch?  This is not related to escape sequence handling:

sk@nexus(~)> echo -E '\a'
'\a
sk@nexus(~)> echo -e '\a'
'

And yet, it is:

sk@nexus(~)> echo '\\ \ \ \ '
\\ \ \ \ 
sk@nexus(~)> echo '\\ \a \ \ '
 \ \ '\\ \a \ \ 
sk@nexus(~)> echo 'wow\awow'
wow'wow\awow

sk@nexus(~)> echo $'\a'
'
sk@nexus(~)> echo \\a
\a

Finally!

sk@nexus(~)> echo $BASH_VERSION 
3.2.5(1)-release
sk@nexus(~)> gcc --version
gcc (GCC) 4.1.2 20060928 (prerelease) (Ubuntu 4.1.1-13ubuntu5)


Sorry if I'm being terribly ignorant here, but I don't get it.

On a related note, the documented escape sequences handled by "echo"
differ between help echo and man echo  (-e vs. -E).

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