substitution WIP

gash/gash.scm

@@ -179,6 +179,7 @@ the GNU Public License, see COPYING for the copyleft.
     (('script term "&") (list (background (transform term))))
     (('script term) `(,(transform term)))
     (('script terms ...) (transform terms))
+    (('substitution "$(" (script) ")") (stderr "FOO: " (transform script)) (transform script))
     ((('term command)) `(,(transform command)))
     ((('term command) ...) (map transform command))
     ((('term command) (('term commands) ...)) (map transform (cons command commands)))

gash/peg.scm

@@ -37,8 +37,7 @@
   (define-peg-pattern here-document all (and (+ (and (not-followed-by here-delim) peg-any)) here-delim))
 
   (define-peg-string-patterns
-    "script           <-- ws* (term (separator term)* separator?)? eof
+    "script           <-- ws* (term (separator term)* separator?)?
-     eof              <   !. / error
      error            <-- .*
      term             <-- pipeline (sp* ('&&' / '||') ws* pipeline)*
      pipeline         <-- '!'? sp* command (sp* pipe ws* command)*

test/substitution

@@ -1 +0,0 @@
-echo "$(ls)"

todo/substitution

@@ -0,0 +1 @@
+echo $(find test -type f)