16_a_history_of_qed
This one was in BCPL, and instead of compiling to machine code, regular expressions were represented as trees that were interpreted by the editor.

%3 r_0016_0003__was was r_0016_0001__This_r_0016_0002__one This one r_0016_0003__was->r_0016_0001__This_r_0016_0002__one [arg0] r_0016_0005__BCPL BCPL r_0016_0003__was->r_0016_0005__BCPL in [clr] r_0016_0007__and and r_0016_0007__and->r_0016_0003__was [conj1] r_0016_0008__instead_of instead of r_0016_0007__and->r_0016_0008__instead_of [conj2] r_0016_0009__compiling compiling r_0016_0008__instead_of->r_0016_0009__compiling [restriction] r_0016_0016__were were r_0016_0008__instead_of->r_0016_0016__were [scope] r_0016_0011__machine_r_0016_0012__code machine code r_0016_0009__compiling->r_0016_0011__machine_r_0016_0012__code to [nim] r_0016_0015__expressions expressions r_0016_0009__compiling->r_0016_0015__expressions [arg0] r_0016_0017__represented represented r_0016_0016__were->r_0016_0017__represented [scope] r_0016_0014__regular regular r_0016_0015__expressions->r_0016_0014__regular [attrib] r_0016_0017__represented->r_0016_0015__expressions [arg1] r_0016_0019__trees trees r_0016_0017__represented->r_0016_0019__trees [prd] z_000_16_a_history_of_qed_48 r_0016_0017__represented->z_000_16_a_history_of_qed_48 [arg0] r_0016_0020__that_r_0016_0021__were that were r_0016_0022__interpreted interpreted r_0016_0020__that_r_0016_0021__were->r_0016_0022__interpreted [scope] r_0016_0022__interpreted->r_0016_0019__trees [arg1] r_0016_0024__the_r_0016_0025__editor the editor r_0016_0022__interpreted->r_0016_0024__the_r_0016_0025__editor [arg0]
arc(r_0016_0003__was, r_0016_0001__This_r_0016_0002__one, arg0).
arc(r_0016_0003__was, r_0016_0005__BCPL, r_0016_0004__in_clr14).
arc(r_0016_0007__and, r_0016_0003__was, conj1).
arc(r_0016_0007__and, r_0016_0008__instead_of, conj2).
arc(r_0016_0008__instead_of, r_0016_0009__compiling, restriction).
arc(r_0016_0008__instead_of, r_0016_0016__were, scope).
arc(r_0016_0009__compiling, r_0016_0011__machine_r_0016_0012__code, r_0016_0010__to_nim32).
arc(r_0016_0009__compiling, r_0016_0015__expressions, arg0).
arc(r_0016_0015__expressions, r_0016_0014__regular, attrib40).
arc(r_0016_0016__were, r_0016_0017__represented, scope).
arc(r_0016_0017__represented, r_0016_0015__expressions, arg1).
arc(r_0016_0017__represented, r_0016_0019__trees, prd).
arc(r_0016_0017__represented, z_000_16_a_history_of_qed_48, arg0).
arc(r_0016_0020__that_r_0016_0021__were, r_0016_0022__interpreted, scope).
arc(r_0016_0022__interpreted, r_0016_0019__trees, arg1).
arc(r_0016_0022__interpreted, r_0016_0024__the_r_0016_0025__editor, arg0).



%3 r_0016_0003__was was r_0016_0001__This_r_0016_0002__one This one r_0016_0003__was->r_0016_0001__This_r_0016_0002__one [arg0] r_0016_0005__BCPL BCPL r_0016_0003__was->r_0016_0005__BCPL in [clr] r_0016_0007__and and r_0016_0007__and->r_0016_0003__was [conj1] r_0016_0008__instead_of instead of r_0016_0007__and->r_0016_0008__instead_of [conj2] r_0016_0009__compiling compiling r_0016_0008__instead_of->r_0016_0009__compiling [conj1] r_0016_0016__were_r_0016_0017__represented were represented r_0016_0008__instead_of->r_0016_0016__were_r_0016_0017__represented [conj2] r_0016_0011__machine_r_0016_0012__code machine code r_0016_0009__compiling->r_0016_0011__machine_r_0016_0012__code to [nim] r_0016_0015__expressions expressions r_0016_0009__compiling->r_0016_0015__expressions [arg0] r_0016_0016__were_r_0016_0017__represented->r_0016_0015__expressions [arg1] r_0016_0019__trees trees r_0016_0016__were_r_0016_0017__represented->r_0016_0019__trees [prd] z_000_16_a_history_of_qed_48 r_0016_0016__were_r_0016_0017__represented->z_000_16_a_history_of_qed_48 [arg0] r_0016_0014__regular regular r_0016_0015__expressions->r_0016_0014__regular [attrib] r_0016_0020__that_r_0016_0021__were_r_0016_0022__interpreted that were interpreted r_0016_0020__that_r_0016_0021__were_r_0016_0022__interpreted->r_0016_0019__trees [arg1] r_0016_0024__the_r_0016_0025__editor the editor r_0016_0020__that_r_0016_0021__were_r_0016_0022__interpreted->r_0016_0024__the_r_0016_0025__editor [arg0]
fof(formula,axiom,
    ? [R_16_7_AND,R_16_3_WAS,R_16_1_THIS_ONE,R_16_5_BCPL,R_16_8_INSTEAD_OF,R_16_9_COMPILING,R_16_11_MACHINE_CODE,R_16_16_WERE_REPRESENTED,Z_16_A_HISTORY_OF_QED_48,R_16_15_EXPRESSIONS,R_16_14_REGULAR,R_16_20_THAT_WERE_INTERPRETED,R_16_24_THE_EDITOR,R_16_19_TREES] :
      ( this_one(R_16_1_THIS_ONE)
      & bCPL(R_16_5_BCPL)
      & machine_code(R_16_11_MACHINE_CODE)
      & regular(R_16_14_REGULAR)
      & the_editor(R_16_24_THE_EDITOR)
      & trees(R_16_19_TREES)
      & and(R_16_7_AND)
      & conj1(R_16_7_AND,R_16_3_WAS)
      & was(R_16_3_WAS,R_16_1_THIS_ONE)
      & in_clr14(R_16_3_WAS,R_16_5_BCPL)
      & conj2(R_16_7_AND,R_16_8_INSTEAD_OF)
      & instead_of(R_16_8_INSTEAD_OF)
      & conj1(R_16_8_INSTEAD_OF,R_16_9_COMPILING)
      & compiling(R_16_9_COMPILING,R_16_15_EXPRESSIONS)
      & expressions(R_16_15_EXPRESSIONS)
      & attrib40(R_16_15_EXPRESSIONS,R_16_14_REGULAR)
      & to_nim32(R_16_9_COMPILING,R_16_11_MACHINE_CODE)
      & conj2(R_16_8_INSTEAD_OF,R_16_16_WERE_REPRESENTED)
      & were_represented(R_16_16_WERE_REPRESENTED,Z_16_A_HISTORY_OF_QED_48,R_16_15_EXPRESSIONS,R_16_19_TREES)
      & that_were_interpreted(R_16_20_THAT_WERE_INTERPRETED,R_16_24_THE_EDITOR,R_16_19_TREES) ) ).



n16_a_history_of_qed n16_a_history_of_qed_6 This n16_a_history_of_qed_8 one n16_a_history_of_qed_10 was n16_a_history_of_qed_13 in n16_a_history_of_qed_16 BCPL n16_a_history_of_qed_18 , n16_a_history_of_qed_21 and n16_a_history_of_qed_25 instead_of n16_a_history_of_qed_28 compiling n16_a_history_of_qed_31 to n16_a_history_of_qed_34 machine n16_a_history_of_qed_36 code n16_a_history_of_qed_38 , n16_a_history_of_qed_42 regular n16_a_history_of_qed_44 expressions n16_a_history_of_qed_46 were n16_a_history_of_qed_49 * n16_a_history_of_qed_51 represented n16_a_history_of_qed_54 as n16_a_history_of_qed_57 trees n16_a_history_of_qed_60 that n16_a_history_of_qed_62 *T* n16_a_history_of_qed_64 were n16_a_history_of_qed_67 * n16_a_history_of_qed_69 interpreted n16_a_history_of_qed_72 by n16_a_history_of_qed_75 the n16_a_history_of_qed_77 editor n16_a_history_of_qed_79 . n16_a_history_of_qed_1 IP-MAT n16_a_history_of_qed_2 ILYR n16_a_history_of_qed_1->n16_a_history_of_qed_2 n16_a_history_of_qed_78 PUNC n16_a_history_of_qed_1->n16_a_history_of_qed_78 n16_a_history_of_qed_3 ILYR n16_a_history_of_qed_2->n16_a_history_of_qed_3 n16_a_history_of_qed_17 PUNC n16_a_history_of_qed_2->n16_a_history_of_qed_17 n16_a_history_of_qed_19 CONJP n16_a_history_of_qed_2->n16_a_history_of_qed_19 n16_a_history_of_qed_4 NP-SBJ n16_a_history_of_qed_3->n16_a_history_of_qed_4 n16_a_history_of_qed_9 BED;_Ipr_ n16_a_history_of_qed_3->n16_a_history_of_qed_9 n16_a_history_of_qed_11 PP-CLR n16_a_history_of_qed_3->n16_a_history_of_qed_11 n16_a_history_of_qed_5 D n16_a_history_of_qed_4->n16_a_history_of_qed_5 n16_a_history_of_qed_7 NUM n16_a_history_of_qed_4->n16_a_history_of_qed_7 n16_a_history_of_qed_5->n16_a_history_of_qed_6 n16_a_history_of_qed_7->n16_a_history_of_qed_8 n16_a_history_of_qed_9->n16_a_history_of_qed_10 n16_a_history_of_qed_12 P-ROLE n16_a_history_of_qed_11->n16_a_history_of_qed_12 n16_a_history_of_qed_14 NP n16_a_history_of_qed_11->n16_a_history_of_qed_14 n16_a_history_of_qed_12->n16_a_history_of_qed_13 n16_a_history_of_qed_15 NPR n16_a_history_of_qed_14->n16_a_history_of_qed_15 n16_a_history_of_qed_15->n16_a_history_of_qed_16 n16_a_history_of_qed_17->n16_a_history_of_qed_18 n16_a_history_of_qed_20 CONJ n16_a_history_of_qed_19->n16_a_history_of_qed_20 n16_a_history_of_qed_22 ILYR n16_a_history_of_qed_19->n16_a_history_of_qed_22 n16_a_history_of_qed_20->n16_a_history_of_qed_21 n16_a_history_of_qed_23 PP-SCON n16_a_history_of_qed_22->n16_a_history_of_qed_23 n16_a_history_of_qed_37 PUNC n16_a_history_of_qed_22->n16_a_history_of_qed_37 n16_a_history_of_qed_39 NP-SBJ n16_a_history_of_qed_22->n16_a_history_of_qed_39 n16_a_history_of_qed_45 BED;_cat_VePASS_ n16_a_history_of_qed_22->n16_a_history_of_qed_45 n16_a_history_of_qed_47 IP-PPL-CAT n16_a_history_of_qed_22->n16_a_history_of_qed_47 n16_a_history_of_qed_24 P-CONN n16_a_history_of_qed_23->n16_a_history_of_qed_24 n16_a_history_of_qed_26 IP-PPL2 n16_a_history_of_qed_23->n16_a_history_of_qed_26 n16_a_history_of_qed_24->n16_a_history_of_qed_25 n16_a_history_of_qed_27 VAG;__ n16_a_history_of_qed_26->n16_a_history_of_qed_27 n16_a_history_of_qed_29 PP-NIM n16_a_history_of_qed_26->n16_a_history_of_qed_29 n16_a_history_of_qed_27->n16_a_history_of_qed_28 n16_a_history_of_qed_30 P-ROLE n16_a_history_of_qed_29->n16_a_history_of_qed_30 n16_a_history_of_qed_32 NP n16_a_history_of_qed_29->n16_a_history_of_qed_32 n16_a_history_of_qed_30->n16_a_history_of_qed_31 n16_a_history_of_qed_33 N n16_a_history_of_qed_32->n16_a_history_of_qed_33 n16_a_history_of_qed_35 N n16_a_history_of_qed_32->n16_a_history_of_qed_35 n16_a_history_of_qed_33->n16_a_history_of_qed_34 n16_a_history_of_qed_35->n16_a_history_of_qed_36 n16_a_history_of_qed_37->n16_a_history_of_qed_38 n16_a_history_of_qed_40 ADJP n16_a_history_of_qed_39->n16_a_history_of_qed_40 n16_a_history_of_qed_43 NS n16_a_history_of_qed_39->n16_a_history_of_qed_43 n16_a_history_of_qed_41 ADJ n16_a_history_of_qed_40->n16_a_history_of_qed_41 n16_a_history_of_qed_41->n16_a_history_of_qed_42 n16_a_history_of_qed_43->n16_a_history_of_qed_44 n16_a_history_of_qed_45->n16_a_history_of_qed_46 n16_a_history_of_qed_48 NP-LGS n16_a_history_of_qed_47->n16_a_history_of_qed_48 n16_a_history_of_qed_50 VVN;__ n16_a_history_of_qed_47->n16_a_history_of_qed_50 n16_a_history_of_qed_52 PP-PRD n16_a_history_of_qed_47->n16_a_history_of_qed_52 n16_a_history_of_qed_48->n16_a_history_of_qed_49 n16_a_history_of_qed_50->n16_a_history_of_qed_51 n16_a_history_of_qed_53 P-ROLE n16_a_history_of_qed_52->n16_a_history_of_qed_53 n16_a_history_of_qed_55 NP n16_a_history_of_qed_52->n16_a_history_of_qed_55 n16_a_history_of_qed_53->n16_a_history_of_qed_54 n16_a_history_of_qed_56 NS n16_a_history_of_qed_55->n16_a_history_of_qed_56 n16_a_history_of_qed_58 IP-REL n16_a_history_of_qed_55->n16_a_history_of_qed_58 n16_a_history_of_qed_56->n16_a_history_of_qed_57 n16_a_history_of_qed_59 C n16_a_history_of_qed_58->n16_a_history_of_qed_59 n16_a_history_of_qed_61 NP-SBJ n16_a_history_of_qed_58->n16_a_history_of_qed_61 n16_a_history_of_qed_63 BED;_cat_VePASS_ n16_a_history_of_qed_58->n16_a_history_of_qed_63 n16_a_history_of_qed_65 IP-PPL-CAT n16_a_history_of_qed_58->n16_a_history_of_qed_65 n16_a_history_of_qed_59->n16_a_history_of_qed_60 n16_a_history_of_qed_61->n16_a_history_of_qed_62 n16_a_history_of_qed_63->n16_a_history_of_qed_64 n16_a_history_of_qed_66 NP-LGS n16_a_history_of_qed_65->n16_a_history_of_qed_66 n16_a_history_of_qed_68 VVN;__ n16_a_history_of_qed_65->n16_a_history_of_qed_68 n16_a_history_of_qed_70 PP-LGS n16_a_history_of_qed_65->n16_a_history_of_qed_70 n16_a_history_of_qed_66->n16_a_history_of_qed_67 n16_a_history_of_qed_68->n16_a_history_of_qed_69 n16_a_history_of_qed_71 P-ROLE;_lgs_ n16_a_history_of_qed_70->n16_a_history_of_qed_71 n16_a_history_of_qed_73 NP n16_a_history_of_qed_70->n16_a_history_of_qed_73 n16_a_history_of_qed_71->n16_a_history_of_qed_72 n16_a_history_of_qed_74 D n16_a_history_of_qed_73->n16_a_history_of_qed_74 n16_a_history_of_qed_76 N n16_a_history_of_qed_73->n16_a_history_of_qed_76 n16_a_history_of_qed_74->n16_a_history_of_qed_75 n16_a_history_of_qed_76->n16_a_history_of_qed_77 n16_a_history_of_qed_78->n16_a_history_of_qed_79
( (IP-MAT (ILYR (ILYR (NP-SBJ;{MULTICS_QED} (D This;{this})
                                            (NUM one;{one}))
                      (BED;_Ipr_ was;{be[in]})
                      (PP-CLR (P-ROLE in;{in})
                              (NP (NPR BCPL;{BCPL}))))
                (PUNC ,)
                (CONJP (CONJ and;{and})
                       (ILYR (PP-SCON (P-CONN instead_of;{instead_of})
                                      (IP-PPL2 (VAG;__ compiling;{compile})
                                               (PP-NIM (P-ROLE to;{to})
                                                       (NP (N machine;{machine})
                                                           (N code;{code})))))
                             (PUNC ,)
                             (NP-SBJ (ADJP (ADJ regular;{regular}))
                                     (NS expressions;{expression}))
                             (BED;_cat_VePASS_ were;{be})
                             (IP-PPL-CAT (NP-LGS *)
                                         (VVN;__ represented;{represent})
                                         (PP-PRD (P-ROLE as;{as})
                                                 (NP (NS trees;{tree})
                                                     (IP-REL (C that;{that})
                                                             (NP-SBJ *T*)
                                                             (BED;_cat_VePASS_ were;{be})
                                                             (IP-PPL-CAT (NP-LGS *)
                                                                         (VVN;__ interpreted;{interpret})
                                                                         (PP-LGS (P-ROLE;_lgs_ by;{by})
                                                                                 (NP (D the;{the})
                                                                                     (N editor;{editor})))))))))))
          (PUNC .))
  (ID 16_a_history_of_qed))