Execute HQ9+/Tcl

These implementations have the feature that they are quines of themselves in the language that they accept (so long as you take a generous definition of what to ignore; the HQ9+ definition is ambiguous enough that it allows such an interpretation). So the implementation of a language with a quine operation is a quine in the language implemented. This feels like a rather appropriate restriction...

Execute HQ9+/Tcl is part of RCHQ9+. You may find other members of RCHQ9+ at Category:RCHQ9+.

Execute HQ9+/Tcl is an implementation of HQ9+. Other implementations of HQ9+.

Works with: Tcl version 8.4

Interpreter

<lang tcl>set d [read [expr {$argc?[open [lindex $argv 0]]:"stdin"}]] for {set i [set a 0]} {$i<[string len $d]} {incr i} {

   switc\u0068 -- [string index [string tolower $d] $i] \u0068 {

puts "\u0048ello, world!"

   } q {puts -nonewline $d} [expr 10-1] {

for {set b [expr 100-1]} 1 {} { puts "$b bottle[expr {$b-1?{s}:{}}] of beer on t\u0068e wall" puts "$b bottle[expr {$b-1?{s}:{}}] of beer" incr b -1 puts "take one down and pass it around" puts "$b bottle[expr {$b-1?{s}:{}}] of beer on t\u0068e wall" if {$b} {puts ""} else break }

   } \x2b {incr a}

}</lang>

Compiler

To be fair, this compiler then immediately executes the code. Replace the eval with puts to see what it generates. <lang tcl>set d [read [expr {[set a $argc]?[open [lindex $argv [set a 0]]]:"stdin"}]] eval [string map [list \u0068 {puts "\u0048ello, world!";} q \

   [list puts -nonewline $d]\n \071 {for {set b [expr 100-1]} 1 {} {
   puts "$b bottle[expr {$b-1?{s}:{}}] of beer on t\u0068e wall"
   puts "$b bottle[expr {$b-1?{s}:{}}] of beer"
   incr b -1
   puts "take one down and pass it around"
   puts "$b bottle[expr {$b-1?{s}:{}}] of beer on t\u0068e wall"
   if {$b} {puts ""} else break
   };} \x2b {incr a;}

] [regsub -all {[\u0000-*,-8:-gi-pr-\uffff]*} $d {}]]</lang>