diff --git a/src/modules/punk-0.1.tm b/src/modules/punk-0.1.tm
index 20b7967b..2d6e61da 100644
--- a/src/modules/punk-0.1.tm
+++ b/src/modules/punk-0.1.tm
@@ -295,16 +295,59 @@ namespace eval punk {
             return [twapi::new_uuid]
         }
     }
-    proc ::punk::var {varname {= {}} args} {
+
+    #get last command result that was run through the repl
+    proc ::punk::get_runchunk {args} {
+        set argd [punk::args::get_dict {
+            *opts
+            -1  -optional 1 -type none 
+            -2  -optional 1 -type none 
+            *values -min 0 -max 0
+        } $args]
+        #todo - make this command run without truncating previous runchunks
+        set runchunks [tsv::array names repl runchunks-*]
+
+        set sortlist [list]
+        foreach cname $runchunks {
+            set num [lindex [split $cname -] 1]
+            lappend sortlist [list $num $cname] 
+        }
+        set sorted [lsort -index 0 -integer $sortlist] 
+        set chunkname [lindex $sorted end-1 1]
+        set runlist [tsv::get repl $chunkname]
+        #puts stderr "--$runlist"
+        if {![llength $runlist]} {
+            return ""
+        } else {
+            return [lindex [lsearch -inline -index 0 $runlist result] 1]
+        }
+    }
+    interp alias {} _ {} ::punk::get_runchunk
+
+
+    proc ::punk::var {varname {= _=.=_} args} {
         upvar $varname the_var
-        if {${=} == "="} {
-            if {[llength $args] > 1} {
-                set the_var [uplevel 1 $args]
-            } else {
-                set the_var [lindex $args 0]
+        switch -exact -- ${=} {
+            = {
+                if {[llength $args] > 1} {
+                    set the_var $args
+                } else {
+                    set the_var [lindex $args 0]
+                }
+            }
+            .= {
+                if {[llength $args] > 1} {
+                    set the_var [uplevel 1 $args]
+                } else {
+                    set the_var [uplevel 1 [lindex $args 0]]
+                }
+            }
+            _=.=_ {
+                set the_var
+            }
+            default {
+                set the_var [list ${=} {*}$args]
             }
-        } else {
-            set the_var
         }
     }
     proc src {args} {
@@ -7302,6 +7345,15 @@ namespace eval punk {
             set usetable 1
             if {$usetable} {
                 set t [textblock::class::table new -show_hseps 0 -show_header 1 -ansiborder_header [a+ web-green]]
+                if {"windows" eq $::tcl_platform(platform)} {
+                    #If any env vars have been set to empty string - this is considered a deletion of the variable on windows.
+                    #The Tcl ::env array is linked to the underlying process view of the environment 
+                    #- but info exists ::env(var) can misreport as true if it has been deleted by setting to empty string rather than using unset.
+                    #an 'array get' will resynchronise.
+                    #Even if an env variable didn't exist before - setting it to empty string can get it to this inconsistent state.
+                    array get ::env
+                }
+                #do an array read on ::env
                 foreach {v vinfo} $punkenv_config {
                     if {[info exists ::env($v)]} {
                         set c2 [set ::env($v)] 
diff --git a/src/modules/punk/config-0.1.tm b/src/modules/punk/config-0.1.tm
index dd7ae873..206b560b 100644
--- a/src/modules/punk/config-0.1.tm
+++ b/src/modules/punk/config-0.1.tm
@@ -333,17 +333,30 @@ tcl::namespace::eval punk::config {
         error "No such global configuration item '$varname' found in startup config"
     }
 
-    proc get {whichconfig} {
+    proc get {whichconfig {globfor *}} {
         variable startup
         variable running
         switch -- $whichconfig {
             config - startup - startup-config - startup-configuration {
                 #show *startup* config - different behaviour may be confusing to those used to router startup and running configs
-                return $startup
+                set configdata $startup
             }
             running - running-config - running-configuration {
-                return $running
+                set configdata $running
             }
+            default {
+                error "Unknown config name '$whichconfig' - try startup or running"
+            }
+        }
+        if {$globfor eq "*"} {
+            return $configdata
+        } else {
+            set keys [dict keys $configdata [string tolower $globfor]]
+            set filtered [dict create]
+            foreach k $keys {
+                dict set filtered $k [dict get $configdata $k]
+            } 
+            return $filtered
         }
     }
 
@@ -355,20 +368,10 @@ tcl::namespace::eval punk::config {
 
     }
 
-    proc show {whichconfig} {
+    proc show {whichconfig {globfor *}} {
         #todo - tables for console
-        variable startup
-        variable running
-        switch -- $whichconfig {
-            config - startup - startup-config - startup-configuration {
-                #show *startup* config - different behaviour may be confusing to those used to router startup and running configs
-                return [punk::lib::showdict $startup]
-            }
-            running - running-config - running-configuration {
-                return [punk::lib::showdict $running]
-            }
-        }
-
+        set configdata [punk::config::get $whichconfig $globfor]
+        return [punk::lib::showdict $configdata]
     }
 
     #e.g 
diff --git a/src/modules/punk/repl-0.1.tm b/src/modules/punk/repl-0.1.tm
index 937988cf..9debf045 100644
--- a/src/modules/punk/repl-0.1.tm
+++ b/src/modules/punk/repl-0.1.tm
@@ -1992,6 +1992,9 @@ proc repl::repl_process_data {inputchan chunktype chunk stdinlines prompt_config
 
                 set repl_runid [tsv::incr repl runid]
                 tsv::set repl runchunks-$repl_runid [list] ;#last_run_display
+                catch {
+                    tsv::unset repl runchunks-[expr {$repl_runid - 10}]
+                }
 
                 #set ::repl::last_unknown ""
                 tsv::set repl last_unknown ""
@@ -2260,6 +2263,10 @@ proc repl::repl_process_data {inputchan chunktype chunk stdinlines prompt_config
                             
                             #we have copied rawresult using append with empty string - so our string interaction with result var here shouldn't affect the returned value
                             #empty-string result handled in other branch
+                            if {![tsv::llength repl runchunks-$repl_runid]} {
+                                #write back to tsv var for use by punk::get_runchunks (underscore command)
+                                tsv::set repl runchunks-$repl_runid [list [list result $result]]
+                            }
                             set flat [string map [list \r\n "" \n ""] $result]
                             if {[string length $flat] == [string length $result]} {
                                 #no line-endings in data