emccalib: ignore ini refs embedded in pin names

Only treat a setp line as tunable when the ini reference is the value
being set, not when it appears inside the pin name.  Fixes the invalid
widget name crash in the calibration tool (issue #4165).

Author: grandixximo

tcl/bin/emccalib.tcl

@@ -179,12 +179,16 @@ proc find_ini_refs {stanza} {
             if { [lindex $halcommand 1] == "\=" } {
                 set tmpstring "setp [lindex $halcommand 0] [lindex $halcommand 2]"
             }
+            # tunable item is the setp value (3rd token); ignore ini refs
+            # that only appear inside the pin name (issue #4165)
+            set valuestring [lindex $tmpstring 2]
             for {set sfx 0} {$sfx < $::EC($stanza,howmany)} {incr sfx} {
                 set tabno $::EC($stanza,$sfx,tabno)
                 set itag [lindex $::EC($stanza,suffixes) $sfx]
-                if {[string match *${stanza}${itag}* $tmpstring]} {
+                if {[string match *${stanza}${itag}* $valuestring]} {
                     # this is a hal file search ordered loop
-                    set thisininame [string trimright [lindex [split $tmpstring "\]" ] end ]]
+                    set thisininame [lindex [split $valuestring "\]" ] end ]
+                    set thisininame [string map {( "" ) ""} $thisininame]
                     set lowername "[string tolower $thisininame]"
                     set thishalcommand [lindex $tmpstring 1]
                     set tmpval [string trim [hal getp [halcmdSubstitute $thishalcommand]]]