diff --git a/sources/LLINTERP b/sources/LLINTERP
index 079e91de..406fdc09 100644
--- a/sources/LLINTERP
+++ b/sources/LLINTERP
@@ -1,19 +1,13 @@
-(DEFINE-FILE-INFO PACKAGE "INTERLISP" READTABLE "INTERLISP" BASE 10)
+(DEFINE-FILE-INFO :PACKAGE "INTERLISP" :READTABLE "INTERLISP" :BASE 10)
 
-(FILECREATED "30-Jun-2022 22:42:02" 
-{DSK}<users>kaplan>local>medley3.5>working-medley>sources>LLINTERP.;4 120990 
+(FILECREATED " 8-May-2026 23:51:41" {DSK}<home>matt>Interlisp>medley>sources>LLINTERP.;2 120946 
 
-      :PREVIOUS-DATE "30-Jun-2022 18:04:04" 
-{DSK}<users>kaplan>local>medley3.5>working-medley>sources>LLINTERP.;3)
+      :EDIT-BY "mth"
 
+      :CHANGES-TO (FNS \CCODEARGLIST)
+
+      :PREVIOUS-DATE "30-Jun-2022 22:42:02" {DSK}<home>matt>Interlisp>medley>sources>LLINTERP.;1)
 
-(* ; "
-Copyright (c) 1981-1988, 1990-1992, 1994-1995 by Venue & Xerox Corporation.
-The following program was created in 1981 but has not been published
-within the meaning of the copyright law, is furnished under license,
-and may not be used, copied and/or disclosed except in accordance
-with the terms of said license.
-")
 
 (PRETTYCOMPRINT LLINTERPCOMS)
 
@@ -1541,7 +1535,8 @@ with the terms of said license.
              (T (ERROR '"Args not available:" FN])
 
 (\CCODEARGLIST
-  [LAMBDA (FNHD SMARTP)                               (* ; "Edited 10-May-88 12:18 by MASINTER")
+  [LAMBDA (FNHD SMARTP)                                      (* ; "Edited  8-May-2026 23:44 by mth")
+                                                          (* ; "Edited 10-May-88 12:18 by MASINTER")
 
     (* ;; "Computes the arglist for raw code object FNHD.  If SMARTP is true, we're allowed to return a Common Lisp arg list if we find one; otherwise, we have to comply with Interlisp arglist semantics.")
 
@@ -1556,53 +1551,55 @@ with the terms of said license.
           (SETQ SIZE (fetch (FNHEADER NTSIZE) of FNHD))
           [COND
              ((EQ [SETQ LOCALSIZE (- (FOLDLO (if (fetch (FNHEADER NATIVE) of FNHD)
-                                                 then (- (fetch (FNHEADER STARTPC)
-                                                                of FNHD)
-                                                             4)
+                                                 then (- (fetch (FNHEADER STARTPC) of FNHD)
+                                                         4)
                                                else (fetch (FNHEADER STARTPC) of FNHD))
                                             BYTESPERWORD)
                                      (SETQ ENDT (+ (fetch (FNHEADER OVERHEADWORDS) of T)
                                                    (COND
                                                       ((EQ SIZE 0)
                                                              (* ; 
-                                           "No nametable, but there's a quad of zeros there anyway")
+                                             "No nametable, but there's a quad of zeros there anyway")
                                                        WORDSPERQUAD)
                                                       (T (UNFOLD SIZE 2]
                   0)                                         (* ; "Nothing extra here")
               )
              [(> LOCALSIZE WORDSPERCELL)                     (* ; 
-                                      "There is a second nametable between the first and the code.")
+                                        "There is a second nametable between the first and the code.")
               (SETQ IVARS (\CCODEIVARSCAN FNHD ENDT (FOLDLO LOCALSIZE 2]
              ((AND (LISTP (SETQ ENDT (\GETBASEPTR FNHD ENDT)))
                    (LISTP (CAR ENDT)))                       (* ; 
-                     "It's exactly a pointer to debugging info, car of which is a stylized arglist")
+                       "It's exactly a pointer to debugging info, car of which is a stylized arglist")
               (SETQ ENDT (if (AND (EQ (CAAR ENDT)
-                                          '&OPTIONAL)
-                                      (LISTGET (CDR ENDT)
-                                             :INTERLISP))
-                             then                        (* ; "The &OPTIONAL, while strictly correct, is misleading, since it's technically true for ALL Interlisp functions.")
-                                   (CDAR ENDT)
+                                      '&OPTIONAL)
+                                  (LISTGET (CDR ENDT)
+                                         :INTERLISP))
+                             then                            (* ; "The &OPTIONAL, while strictly correct, is misleading, since it's technically true for ALL Interlisp functions.")
+                                  (CDAR ENDT)
                            else (CAR ENDT)))
               (RETURN (COND
                          (SMARTP ENDT)
                          (T                                  (* ; "Note that if we got this far, function can't be a nospread (we caught this in the very first COND up above), which means there can't be any &key or &rest")
-                            (for X in ENDT unless (EQ X '&OPTIONAL)
-                               collect (COND
-                                              ((STRINGP X)   (* ; 
-            "Callers of ARGLIST are expecting to get something that would actually function as one")
-                                               (MKATOM X))
-                                              (T X]
+                            (for X in ENDT unless (EQ X '&OPTIONAL) collect (COND
+                                                                               ((STRINGP X)
+                                                             (* ; 
+              "Callers of ARGLIST are expecting to get something that would actually function as one")
+                                                                                (MKATOM X))
+                                                                               (T X]
           [COND
              ((< N 0)                                        (* ; 
-           "Waited until now to see if there was a stored arglist, but we didn't find one--give up")
-              (RETURN 'U]
+             "Waited until now to see if there was a stored arglist, but we didn't find one--give up")
+              (RETURN (COND
+                         ((AND (EQ 2 (fetch (FNHEADER ARGTYPE) of FNHD))
+                               (SETQ IVARS (ASSOC 0 IVARS)))
+                          (CDR IVARS))
+                         (T 'U]
           [COND
              ((NEQ SIZE 0)                                   (* ; "Scan specials name table")
               (SETQ IVARS (\CCODEIVARSCAN FNHD (fetch (FNHEADER OVERHEADWORDS) of T)
                                  SIZE IVARS]
-          [SETQ IVARS (for I from 0 to (SUB1 N)
-                         collect (OR (CDR (ASSOC I IVARS))
-                                         (PACK* '*ARG* I]
+          [SETQ IVARS (for I from 0 to (SUB1 N) collect (OR (CDR (ASSOC I IVARS))
+                                                            (PACK* '*ARG* I]
           (RETURN (SELECTQ (fetch (FNHEADER ARGTYPE) of FNHD)
                       (3 (CAR IVARS))
                       IVARS])
@@ -1745,33 +1742,31 @@ with the terms of said license.
 
 (ADDTOVAR LAMA APPLY* \INTERPRETER)
 )
-(PUTPROPS LLINTERP COPYRIGHT ("Venue & Xerox Corporation" T 1981 1982 1983 1984 1985 1986 1987 1988 
-1990 1991 1992 1994 1995))
 (DECLARE%: DONTCOPY
-  (FILEMAP (NIL (6409 23670 (\INTERPRETER 6419 . 11015) (\INTERPRETER1 11017 . 17585) (
-\SETUP-COMPILED-CLOSURE-CALL 17587 . 22734) (\STKNAME 22736 . 23668)) (23699 29111 (\ENVCALL.UFN 23709
- . 23841) (\SETUP-ENVIRONMENT-CALL 23843 . 29109)) (29150 34027 (EVAL 29160 . 29260) (\EVAL 29262 . 
-29472) (\EVALFORM 29474 . 30705) (\EVALFORMASLAMBDA 30707 . 30897) (\EVALOTHER 30899 . 31106) (APPLY 
-31108 . 31215) (APPLY* 31217 . 32332) (\CHECKAPPLY* 32334 . 33439) (\CKAPPLYARGS 33441 . 33784) (
-DEFEVAL 33786 . 34025)) (35871 43460 (EVALV 35881 . 36090) (\EVALV1 36092 . 36247) (\EVALVAR 36249 . 
-36612) (BOUNDP 36614 . 36830) (SET 36832 . 37198) (\SETVAR 37200 . 37570) (SETQ 37572 . 38244) (
-\STKSCAN 38246 . 41910) (\SETFVARSLOT 41912 . 43458)) (43494 56501 (PROG 43504 . 46020) (\PROG0 46022
- . 49652) (\EVPROG1 49654 . 49857) (RETURN 49859 . 50400) (GO 50402 . 51217) (EVALA 51219 . 53148) (
-\EVALA 53150 . 55743) (ERRORSET 55745 . 56350) (SI::ERRORSET-PRINT-FUNCTION 56352 . 56499)) (56560 
-69212 (LET 56570 . 58713) (LET* 58715 . 60863) (\LET0 60865 . 64525) (\LET* 64527 . 69210)) (69213 
-70789 (QUOTE 69223 . 69254) (AND 69256 . 69464) (OR 69466 . 69714) (PROGN 69716 . 69995) (COND 69997
- . 70331) (\EVPROGN 70333 . 70546) (PROG1 70548 . 70787)) (71277 78168 (ENVEVAL 71287 . 71537) (
-ENVAPPLY 71539 . 71796) (FUNCTION 71798 . 72028) (\FUNCT1 72030 . 74479) (\MAKEFUNARGFRAME 74481 . 
-76678) (STKEVAL 76680 . 76828) (STKAPPLY 76830 . 76999) (RETEVAL 77001 . 77605) (RETAPPLY 77607 . 
-78166)) (78289 85797 (BLIPVAL 78299 . 82200) (SETBLIPVAL 82202 . 84944) (BLIPSCAN 84946 . 85795)) (
-85798 86493 (\REALFRAMEP 85808 . 86491)) (86869 96264 (RAIDCOMMAND 86879 . 90485) (RAIDSHOWFRAME 90487
- . 90870) (RAIDSTACKCMD 90872 . 92053) (RAIDROOTFRAME 92055 . 92317) (PRINTADDRS 92319 . 92845) (
-PRINTVA 92847 . 92992) (READVA 92994 . 93072) (READATOM 93074 . 93656) (READOCT 93658 . 94289) (
-SHOWSTACKBLOCKS 94291 . 95537) (SHOWSTACKBLOCK1 95539 . 95690) (PRINCOPY 95692 . 95824) (NOSUCHATOM 
-95826 . 96262)) (96265 104893 (BACKTRACE 96275 . 96632) (\BACKTRACE 96634 . 97740) (\SCANFORNTENTRY 
-97742 . 99372) (\PRINTSTK 99374 . 99561) (\PRINTFRAME 99563 . 103546) (\PRINTBF 103548 . 104891)) (
-107393 116737 (CCODEP 107403 . 107678) (EXPRP 107680 . 107939) (SUBRP 107941 . 107996) (FNTYP 107998
- . 108758) (ARGTYPE 108760 . 109374) (NARGS 109376 . 109863) (ARGLIST 109865 . 111114) (\CCODEARGLIST 
-111116 . 115512) (\CCODEIVARSCAN 115514 . 116735)) (117687 119918 (CONSTANTS 117697 . 117988) (
-CONSTANTEXPRESSIONP 117990 . 119916)))))
+  (FILEMAP (NIL (6111 23372 (\INTERPRETER 6121 . 10717) (\INTERPRETER1 10719 . 17287) (
+\SETUP-COMPILED-CLOSURE-CALL 17289 . 22436) (\STKNAME 22438 . 23370)) (23401 28813 (\ENVCALL.UFN 23411
+ . 23543) (\SETUP-ENVIRONMENT-CALL 23545 . 28811)) (28852 33729 (EVAL 28862 . 28962) (\EVAL 28964 . 
+29174) (\EVALFORM 29176 . 30407) (\EVALFORMASLAMBDA 30409 . 30599) (\EVALOTHER 30601 . 30808) (APPLY 
+30810 . 30917) (APPLY* 30919 . 32034) (\CHECKAPPLY* 32036 . 33141) (\CKAPPLYARGS 33143 . 33486) (
+DEFEVAL 33488 . 33727)) (35573 43162 (EVALV 35583 . 35792) (\EVALV1 35794 . 35949) (\EVALVAR 35951 . 
+36314) (BOUNDP 36316 . 36532) (SET 36534 . 36900) (\SETVAR 36902 . 37272) (SETQ 37274 . 37946) (
+\STKSCAN 37948 . 41612) (\SETFVARSLOT 41614 . 43160)) (43196 56203 (PROG 43206 . 45722) (\PROG0 45724
+ . 49354) (\EVPROG1 49356 . 49559) (RETURN 49561 . 50102) (GO 50104 . 50919) (EVALA 50921 . 52850) (
+\EVALA 52852 . 55445) (ERRORSET 55447 . 56052) (SI::ERRORSET-PRINT-FUNCTION 56054 . 56201)) (56262 
+68914 (LET 56272 . 58415) (LET* 58417 . 60565) (\LET0 60567 . 64227) (\LET* 64229 . 68912)) (68915 
+70491 (QUOTE 68925 . 68956) (AND 68958 . 69166) (OR 69168 . 69416) (PROGN 69418 . 69697) (COND 69699
+ . 70033) (\EVPROGN 70035 . 70248) (PROG1 70250 . 70489)) (70979 77870 (ENVEVAL 70989 . 71239) (
+ENVAPPLY 71241 . 71498) (FUNCTION 71500 . 71730) (\FUNCT1 71732 . 74181) (\MAKEFUNARGFRAME 74183 . 
+76380) (STKEVAL 76382 . 76530) (STKAPPLY 76532 . 76701) (RETEVAL 76703 . 77307) (RETAPPLY 77309 . 
+77868)) (77991 85499 (BLIPVAL 78001 . 81902) (SETBLIPVAL 81904 . 84646) (BLIPSCAN 84648 . 85497)) (
+85500 86195 (\REALFRAMEP 85510 . 86193)) (86571 95966 (RAIDCOMMAND 86581 . 90187) (RAIDSHOWFRAME 90189
+ . 90572) (RAIDSTACKCMD 90574 . 91755) (RAIDROOTFRAME 91757 . 92019) (PRINTADDRS 92021 . 92547) (
+PRINTVA 92549 . 92694) (READVA 92696 . 92774) (READATOM 92776 . 93358) (READOCT 93360 . 93991) (
+SHOWSTACKBLOCKS 93993 . 95239) (SHOWSTACKBLOCK1 95241 . 95392) (PRINCOPY 95394 . 95526) (NOSUCHATOM 
+95528 . 95964)) (95967 104595 (BACKTRACE 95977 . 96334) (\BACKTRACE 96336 . 97442) (\SCANFORNTENTRY 
+97444 . 99074) (\PRINTSTK 99076 . 99263) (\PRINTFRAME 99265 . 103248) (\PRINTBF 103250 . 104593)) (
+107095 116821 (CCODEP 107105 . 107380) (EXPRP 107382 . 107641) (SUBRP 107643 . 107698) (FNTYP 107700
+ . 108460) (ARGTYPE 108462 . 109076) (NARGS 109078 . 109565) (ARGLIST 109567 . 110816) (\CCODEARGLIST 
+110818 . 115596) (\CCODEIVARSCAN 115598 . 116819)) (117771 120002 (CONSTANTS 117781 . 118072) (
+CONSTANTEXPRESSIONP 118074 . 120000)))))
 STOP
diff --git a/sources/LLINTERP.LCOM b/sources/LLINTERP.LCOM
index 7abb7a4a..4a24ebca 100644
Binary files a/sources/LLINTERP.LCOM and b/sources/LLINTERP.LCOM differ
