ok, so Dan wants this patch. I took a look at your script, there are two cases it addresses: exporting nameref and doing it from inside the function scope, I applied both patches:
nameref masking in scope: https://lists.gnu.org/archive/html/bug-bash/2016-05/msg00012.html exporting namerefs: https://lists.gnu.org/archive/html/bug-bash/2016-05/msg00024.html and with this modification to your script: diff --git a/exportscope b/exportscope index 05bae73..0125681 100644 --- a/exportscope +++ b/exportscope @@ -37,7 +37,8 @@ function h { ;; 2) typeset -n _x=$2 - typeset -x _x='in h2' + export -r _x; + _x='in h2'; eval "$showEnv" h2 esac } @@ -75,4 +76,4 @@ for sh in bash ksh mksh zsh; do printf '%s\n\n' "$("$sh" -c "$code" -- "$sh" 2>&1)" done You can get (difference in test 3): #./exportscope bash test 1: subprocess f: declare -x x="in f" local f: declare -x x="in f" global: declare -x x="global" bash test 2: subprocess g: declare -x x="in g" subprocess f: declare -x x="in f" local f: declare -x x="in f" local g: declare -x x="in g" global: declare -- x="unset" bash test 3: subprocess h2: declare -x x="in h2" subprocess h1: declare -x x="in h2" local h1: declare -x x="in h2" Maybe you can comment on wether the patches are valid. cheers, pg On 4 May 2016, at 22:40, Dan Douglas wrote: > Yeah I was just looking for this old script last night and just found it :) > > https://gist.github.com/ormaaj/04923e11e8bdc27688ad > > If you scroll down to the output for "test 3" where "h" gets called > and passes a local "x" to a function that creates a reference to it > and exports the reference you can see that bash calls "x" unset in > both the first and second scope. As I recall we were discussing the > way exported locals interact between scopes at the time, not namerefs, > but I added the case for namerefs since I wasn't sure how this should > work. I should probably run it again with the current devel branch. > > Even though bash doesn't yet support references for parameters like > ksh93, neither does mksh, which also shows differences from bash.
