Re: History expansion in multiline string, within single quote

[Chet Ramey]

On 8/9/18 3:47 AM, schplurtz@laposte.net wrote:

> Bash Version: 4.4 
> Patch Level: 12 
> Release Status: release 
> 
> Description: 
> Bug happens in an interactive shell. 
> 
> this works as expected, no history expansion : 
> echo "foo"'!bar'"qux" 
> 
> but this fails, bash tries to hist-expand !bar', which it should not. 
> echo "foo 
> "'!bar'"qux" 
> 
> -bash: !bar': event not found 
> 
> I just compiled bash 4.4.18 and tested, the bug is there too. 

Since the history library is explicitly line-oriented, and independent of
the shell, there hasn't been a clean way to inform it about any quoting
state the current line should inherit.

I added an experimental new state variable that will appear in
readline-8.0-beta that should allow applications to communicate this
state to the history library. We'll see how it works.

Chet
-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/