=== modified file 'query.pl'
--- query.pl	2015-08-19 20:11:44 +0000
+++ query.pl	2015-07-25 04:11:12 +0000
@@ -14,26 +14,13 @@
     query_name_next(T).
 query_name_next([]) --> [].
 
-query_default_text([H|T]) --> [H], {\+memberchk(H,`'<>`)}, query_default_text(T).
-query_default_text([]) --> [].
-
 query_content([name(Name)|T]) --> query_name(Name), query_content(T).
 query_content([query(Query)|T]) --> query_exp(Query), query_content(T).
 query_content([expr(Expr)|T]) --> `'`, query_awk(Expr), `'`, query_content(T).
 query_content([]) --> [].
 
-%query_default([text(Text)|T]) --> query_default_text(Text), query_default(T).
-query_default([expr(Expr)|T]) --> `'`, query_awk(Expr), `'`, query_default(T).
-query_default([query(Query)|T]) --> query_exp(Query), query_default(T).
-query_default([query(Query, Default)|T]) -->
-    query_exp(Query, Default), query_default(T).
-query_default([]) --> [].
-
 query_exp(Content) --> `<`, query_content(Content), `>`.
 
-query_exp(Content, Default) -->
-    `<`, query_content(Content), `:`, query_default(Default), `>`.
-
 awk_string(String) --> `"`, awk_string_content(String), `"`.
 
 awk_string_content([0'\\,H|T],R) -->
@@ -74,9 +61,6 @@
 awk_code(R,R,L,L) --> [].
 % awk_code(L) --> awk_code(L,[],delim,_).
 
-query_awk([query(Query, Default)|T],delim) -->
-    query_exp(Query, Default),
-    query_awk(T, expr).
 query_awk([query(Query)|T],delim) -->
     query_exp(Query),
     query_awk(T, expr).
@@ -91,28 +75,13 @@
 
 awk_out([code(Code)|T]) --> Code, awk_out(T).
 awk_out([query(Query)|T]) --> `get(`, query_out(Query), `)`, awk_out(T).
-awk_out([query(Query, Default)|T]) -->
-    `(find(`, query_out(Query), `)?found:`, default_out(Default), `)`, awk_out(T).
 awk_out([]) --> [].
 
 query_out([name(Name)|T]) --> `"`, Name, `"`, query_out(T).
 query_out([query(Query)|T]) --> `get(`, query_out(Query), `)`, query_out(T).
-query_out([query(Query, Default)|T]) -->
-    `(find(`, query_out(Query), `)?found:`, default_out(Default), `)`, query_out(T).
 query_out([expr(Expr)|T]) --> `(`, awk_out(Expr), `)`, query_out(T).
 query_out([]) --> [].
 
-default_out([]) --> `""`.
-default_out([H|T]) --> default_out_aux([H|T]).
-%default_out_aux([text(Text)|T]) --> Text, default_out_aux(T).
-default_out_aux([query(Query)|T]) -->
-    `get(`, query_out(Query), `)`, default_out_aux(T).
-default_out_aux([query(Query, Default)|T]) -->
-    `(find(`, query_out(Query), `)?found:`, default_out(Default), `)`,
-    default_out_aux(T).
-default_out_aux([expr(Expr)|T]) --> `(`, awk_out(Expr), `)`, default_out_aux(T).
-default_out_aux([]) --> [].
-
 %%%
 
 main([InFile]) :-

=== modified file 'query_example.awk'
--- query_example.awk	2015-08-19 20:11:44 +0000
+++ query_example.awk	2015-07-25 04:11:12 +0000
@@ -1,11 +1,4 @@
 BEGIN {
 	foo(<bar>)
 	x[<y<z>>] = <a'b()'>
-	y = ""
-	y = (y) (<c:>)
-	y = (y) (<d:'0'>)
-	y = (y) (<e:<f>>)
-	y = (y) (<g:<h:<i>>>)
-	y = (y) (<g:<h:<i:'<j> - (<k:'0'>)'>>>)
-	y = (y) (<g:<h:<i:'(<j>) - (<k:'0'>)'>>>)
 }