Package: bash
Version: 4.2+dfsg-1
Severity: minor
Tags: upstream
As reported in
http://lists.gnu.org/archive/html/bug-bash/2011-03/msg00176.html, the manpage's
documentation of BASH_SUBLEVEL (which indicates a subshell's depth) is
misleading:
BASH_SUBSHELL
Incremented by one each time a subshell or subshell environment
is spawned. The initial value is 0.
In fact, the value is only incremented in the subshell. The 4.3 version fixes
this:
BASH_SUBSHELL
Incremented by one within each subshell or subshell environment when the shell
begins executing in that environment. The initial value is 0.
The SHLVL variable (which indicates the actual shell's depth relative to its
root bash process) has the same issue:
SHLVL
Incremented by one each time an instance of bash is started.
The incrementation only happens in the child shell.
The latter issue persists in 4.3. In both cases, it would be more useful and
less complicated to specify what the variables contain rather than trying to
describe how they are computed.
--
Filipus Klutiero
http://www.philippecloutier.com
--
To UNSUBSCRIBE, email to [email protected]
with a subject of "unsubscribe". Trouble? Contact [email protected]
