Tsearch2 functionality migrates to core. The bulk of this work is by

Oleg Bartunov and Teodor Sigaev, but I did a lot of editorializing,
so anything that's broken is probably my fault.

Documentation is nonexistent as yet, but let's land the patch so we can
get some portability testing done.

1 files changed, 624 insertions, 0 deletions

diff --git a/src/backend/snowball/libstemmer/stem_ISO_8859_1_dutch.c b/src/backend/snowball/libstemmer/stem_ISO_8859_1_dutch.c
new file mode 100644
index 0000000000..e5ba288b1f
--- /dev/null
+++ b/src/backend/snowball/libstemmer/stem_ISO_8859_1_dutch.c
@@ -0,0 +1,624 @@
+
+/* This file was generated automatically by the Snowball to ANSI C compiler */
+
+#include "header.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+extern int dutch_ISO_8859_1_stem(struct SN_env * z);
+#ifdef __cplusplus
+}
+#endif
+static int r_standard_suffix(struct SN_env * z);
+static int r_undouble(struct SN_env * z);
+static int r_R2(struct SN_env * z);
+static int r_R1(struct SN_env * z);
+static int r_mark_regions(struct SN_env * z);
+static int r_en_ending(struct SN_env * z);
+static int r_e_ending(struct SN_env * z);
+static int r_postlude(struct SN_env * z);
+static int r_prelude(struct SN_env * z);
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+extern struct SN_env * dutch_ISO_8859_1_create_env(void);
+extern void dutch_ISO_8859_1_close_env(struct SN_env * z);
+
+
+#ifdef __cplusplus
+}
+#endif
+static const symbol s_0_1[1] = { 0xE1 };
+static const symbol s_0_2[1] = { 0xE4 };
+static const symbol s_0_3[1] = { 0xE9 };
+static const symbol s_0_4[1] = { 0xEB };
+static const symbol s_0_5[1] = { 0xED };
+static const symbol s_0_6[1] = { 0xEF };
+static const symbol s_0_7[1] = { 0xF3 };
+static const symbol s_0_8[1] = { 0xF6 };
+static const symbol s_0_9[1] = { 0xFA };
+static const symbol s_0_10[1] = { 0xFC };
+
+static const struct among a_0[11] =
+{
+/*  0 */ { 0, 0, -1, 6, 0},
+/*  1 */ { 1, s_0_1, 0, 1, 0},
+/*  2 */ { 1, s_0_2, 0, 1, 0},
+/*  3 */ { 1, s_0_3, 0, 2, 0},
+/*  4 */ { 1, s_0_4, 0, 2, 0},
+/*  5 */ { 1, s_0_5, 0, 3, 0},
+/*  6 */ { 1, s_0_6, 0, 3, 0},
+/*  7 */ { 1, s_0_7, 0, 4, 0},
+/*  8 */ { 1, s_0_8, 0, 4, 0},
+/*  9 */ { 1, s_0_9, 0, 5, 0},
+/* 10 */ { 1, s_0_10, 0, 5, 0}
+};
+
+static const symbol s_1_1[1] = { 'I' };
+static const symbol s_1_2[1] = { 'Y' };
+
+static const struct among a_1[3] =
+{
+/*  0 */ { 0, 0, -1, 3, 0},
+/*  1 */ { 1, s_1_1, 0, 2, 0},
+/*  2 */ { 1, s_1_2, 0, 1, 0}
+};
+
+static const symbol s_2_0[2] = { 'd', 'd' };
+static const symbol s_2_1[2] = { 'k', 'k' };
+static const symbol s_2_2[2] = { 't', 't' };
+
+static const struct among a_2[3] =
+{
+/*  0 */ { 2, s_2_0, -1, -1, 0},
+/*  1 */ { 2, s_2_1, -1, -1, 0},
+/*  2 */ { 2, s_2_2, -1, -1, 0}
+};
+
+static const symbol s_3_0[3] = { 'e', 'n', 'e' };
+static const symbol s_3_1[2] = { 's', 'e' };
+static const symbol s_3_2[2] = { 'e', 'n' };
+static const symbol s_3_3[5] = { 'h', 'e', 'd', 'e', 'n' };
+static const symbol s_3_4[1] = { 's' };
+
+static const struct among a_3[5] =
+{
+/*  0 */ { 3, s_3_0, -1, 2, 0},
+/*  1 */ { 2, s_3_1, -1, 3, 0},
+/*  2 */ { 2, s_3_2, -1, 2, 0},
+/*  3 */ { 5, s_3_3, 2, 1, 0},
+/*  4 */ { 1, s_3_4, -1, 3, 0}
+};
+
+static const symbol s_4_0[3] = { 'e', 'n', 'd' };
+static const symbol s_4_1[2] = { 'i', 'g' };
+static const symbol s_4_2[3] = { 'i', 'n', 'g' };
+static const symbol s_4_3[4] = { 'l', 'i', 'j', 'k' };
+static const symbol s_4_4[4] = { 'b', 'a', 'a', 'r' };
+static const symbol s_4_5[3] = { 'b', 'a', 'r' };
+
+static const struct among a_4[6] =
+{
+/*  0 */ { 3, s_4_0, -1, 1, 0},
+/*  1 */ { 2, s_4_1, -1, 2, 0},
+/*  2 */ { 3, s_4_2, -1, 1, 0},
+/*  3 */ { 4, s_4_3, -1, 3, 0},
+/*  4 */ { 4, s_4_4, -1, 4, 0},
+/*  5 */ { 3, s_4_5, -1, 5, 0}
+};
+
+static const symbol s_5_0[2] = { 'a', 'a' };
+static const symbol s_5_1[2] = { 'e', 'e' };
+static const symbol s_5_2[2] = { 'o', 'o' };
+static const symbol s_5_3[2] = { 'u', 'u' };
+
+static const struct among a_5[4] =
+{
+/*  0 */ { 2, s_5_0, -1, -1, 0},
+/*  1 */ { 2, s_5_1, -1, -1, 0},
+/*  2 */ { 2, s_5_2, -1, -1, 0},
+/*  3 */ { 2, s_5_3, -1, -1, 0}
+};
+
+static const unsigned char g_v[] = { 17, 65, 16, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 128 };
+
+static const unsigned char g_v_I[] = { 1, 0, 0, 17, 65, 16, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 128 };
+
+static const unsigned char g_v_j[] = { 17, 67, 16, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 128 };
+
+static const symbol s_0[] = { 'a' };
+static const symbol s_1[] = { 'e' };
+static const symbol s_2[] = { 'i' };
+static const symbol s_3[] = { 'o' };
+static const symbol s_4[] = { 'u' };
+static const symbol s_5[] = { 'y' };
+static const symbol s_6[] = { 'Y' };
+static const symbol s_7[] = { 'i' };
+static const symbol s_8[] = { 'I' };
+static const symbol s_9[] = { 'y' };
+static const symbol s_10[] = { 'Y' };
+static const symbol s_11[] = { 'y' };
+static const symbol s_12[] = { 'i' };
+static const symbol s_13[] = { 'e' };
+static const symbol s_14[] = { 'g', 'e', 'm' };
+static const symbol s_15[] = { 'h', 'e', 'i', 'd' };
+static const symbol s_16[] = { 'h', 'e', 'i', 'd' };
+static const symbol s_17[] = { 'c' };
+static const symbol s_18[] = { 'e', 'n' };
+static const symbol s_19[] = { 'i', 'g' };
+static const symbol s_20[] = { 'e' };
+static const symbol s_21[] = { 'e' };
+
+static int r_prelude(struct SN_env * z) {
+    int among_var;
+    {   int c_test = z->c; /* test, line 42 */
+        while(1) { /* repeat, line 42 */
+            int c1 = z->c;
+            z->bra = z->c; /* [, line 43 */
+            if (z->c >= z->l || z->p[z->c + 0] >> 5 != 7 || !((340306450 >> (z->p[z->c + 0] & 0x1f)) & 1)) among_var = 6; else
+            among_var = find_among(z, a_0, 11); /* substring, line 43 */
+            if (!(among_var)) goto lab0;
+            z->ket = z->c; /* ], line 43 */
+            switch(among_var) {
+                case 0: goto lab0;
+                case 1:
+                    {   int ret = slice_from_s(z, 1, s_0); /* <-, line 45 */
+                        if (ret < 0) return ret;
+                    }
+                    break;
+                case 2:
+                    {   int ret = slice_from_s(z, 1, s_1); /* <-, line 47 */
+                        if (ret < 0) return ret;
+                    }
+                    break;
+                case 3:
+                    {   int ret = slice_from_s(z, 1, s_2); /* <-, line 49 */
+                        if (ret < 0) return ret;
+                    }
+                    break;
+                case 4:
+                    {   int ret = slice_from_s(z, 1, s_3); /* <-, line 51 */
+                        if (ret < 0) return ret;
+                    }
+                    break;
+                case 5:
+                    {   int ret = slice_from_s(z, 1, s_4); /* <-, line 53 */
+                        if (ret < 0) return ret;
+                    }
+                    break;
+                case 6:
+                    if (z->c >= z->l) goto lab0;
+                    z->c++; /* next, line 54 */
+                    break;
+            }
+            continue;
+        lab0:
+            z->c = c1;
+            break;
+        }
+        z->c = c_test;
+    }
+    {   int c_keep = z->c; /* try, line 57 */
+        z->bra = z->c; /* [, line 57 */
+        if (!(eq_s(z, 1, s_5))) { z->c = c_keep; goto lab1; }
+        z->ket = z->c; /* ], line 57 */
+        {   int ret = slice_from_s(z, 1, s_6); /* <-, line 57 */
+            if (ret < 0) return ret;
+        }
+    lab1:
+        ;
+    }
+    while(1) { /* repeat, line 58 */
+        int c2 = z->c;
+        while(1) { /* goto, line 58 */
+            int c3 = z->c;
+            if (in_grouping(z, g_v, 97, 232, 0)) goto lab3;
+            z->bra = z->c; /* [, line 59 */
+            {   int c4 = z->c; /* or, line 59 */
+                if (!(eq_s(z, 1, s_7))) goto lab5;
+                z->ket = z->c; /* ], line 59 */
+                if (in_grouping(z, g_v, 97, 232, 0)) goto lab5;
+                {   int ret = slice_from_s(z, 1, s_8); /* <-, line 59 */
+                    if (ret < 0) return ret;
+                }
+                goto lab4;
+            lab5:
+                z->c = c4;
+                if (!(eq_s(z, 1, s_9))) goto lab3;
+                z->ket = z->c; /* ], line 60 */
+                {   int ret = slice_from_s(z, 1, s_10); /* <-, line 60 */
+                    if (ret < 0) return ret;
+                }
+            }
+        lab4:
+            z->c = c3;
+            break;
+        lab3:
+            z->c = c3;
+            if (z->c >= z->l) goto lab2;
+            z->c++; /* goto, line 58 */
+        }
+        continue;
+    lab2:
+        z->c = c2;
+        break;
+    }
+    return 1;
+}
+
+static int r_mark_regions(struct SN_env * z) {
+    z->I[0] = z->l;
+    z->I[1] = z->l;
+    {    /* gopast */ /* grouping v, line 69 */
+        int ret = out_grouping(z, g_v, 97, 232, 1);
+        if (ret < 0) return 0;
+        z->c += ret;
+    }
+    {    /* gopast */ /* non v, line 69 */
+        int ret = in_grouping(z, g_v, 97, 232, 1);
+        if (ret < 0) return 0;
+        z->c += ret;
+    }
+    z->I[0] = z->c; /* setmark p1, line 69 */
+     /* try, line 70 */
+    if (!(z->I[0] < 3)) goto lab0;
+    z->I[0] = 3;
+lab0:
+    {    /* gopast */ /* grouping v, line 71 */
+        int ret = out_grouping(z, g_v, 97, 232, 1);
+        if (ret < 0) return 0;
+        z->c += ret;
+    }
+    {    /* gopast */ /* non v, line 71 */
+        int ret = in_grouping(z, g_v, 97, 232, 1);
+        if (ret < 0) return 0;
+        z->c += ret;
+    }
+    z->I[1] = z->c; /* setmark p2, line 71 */
+    return 1;
+}
+
+static int r_postlude(struct SN_env * z) {
+    int among_var;
+    while(1) { /* repeat, line 75 */
+        int c1 = z->c;
+        z->bra = z->c; /* [, line 77 */
+        if (z->c >= z->l || (z->p[z->c + 0] != 73 && z->p[z->c + 0] != 89)) among_var = 3; else
+        among_var = find_among(z, a_1, 3); /* substring, line 77 */
+        if (!(among_var)) goto lab0;
+        z->ket = z->c; /* ], line 77 */
+        switch(among_var) {
+            case 0: goto lab0;
+            case 1:
+                {   int ret = slice_from_s(z, 1, s_11); /* <-, line 78 */
+                    if (ret < 0) return ret;
+                }
+                break;
+            case 2:
+                {   int ret = slice_from_s(z, 1, s_12); /* <-, line 79 */
+                    if (ret < 0) return ret;
+                }
+                break;
+            case 3:
+                if (z->c >= z->l) goto lab0;
+                z->c++; /* next, line 80 */
+                break;
+        }
+        continue;
+    lab0:
+        z->c = c1;
+        break;
+    }
+    return 1;
+}
+
+static int r_R1(struct SN_env * z) {
+    if (!(z->I[0] <= z->c)) return 0;
+    return 1;
+}
+
+static int r_R2(struct SN_env * z) {
+    if (!(z->I[1] <= z->c)) return 0;
+    return 1;
+}
+
+static int r_undouble(struct SN_env * z) {
+    {   int m_test = z->l - z->c; /* test, line 91 */
+        if (z->c - 1 <= z->lb || z->p[z->c - 1] >> 5 != 3 || !((1050640 >> (z->p[z->c - 1] & 0x1f)) & 1)) return 0;
+        if (!(find_among_b(z, a_2, 3))) return 0; /* among, line 91 */
+        z->c = z->l - m_test;
+    }
+    z->ket = z->c; /* [, line 91 */
+    if (z->c <= z->lb) return 0;
+    z->c--; /* next, line 91 */
+    z->bra = z->c; /* ], line 91 */
+    {   int ret = slice_del(z); /* delete, line 91 */
+        if (ret < 0) return ret;
+    }
+    return 1;
+}
+
+static int r_e_ending(struct SN_env * z) {
+    z->B[0] = 0; /* unset e_found, line 95 */
+    z->ket = z->c; /* [, line 96 */
+    if (!(eq_s_b(z, 1, s_13))) return 0;
+    z->bra = z->c; /* ], line 96 */
+    {   int ret = r_R1(z);
+        if (ret == 0) return 0; /* call R1, line 96 */
+        if (ret < 0) return ret;
+    }
+    {   int m_test = z->l - z->c; /* test, line 96 */
+        if (out_grouping_b(z, g_v, 97, 232, 0)) return 0;
+        z->c = z->l - m_test;
+    }
+    {   int ret = slice_del(z); /* delete, line 96 */
+        if (ret < 0) return ret;
+    }
+    z->B[0] = 1; /* set e_found, line 97 */
+    {   int ret = r_undouble(z);
+        if (ret == 0) return 0; /* call undouble, line 98 */
+        if (ret < 0) return ret;
+    }
+    return 1;
+}
+
+static int r_en_ending(struct SN_env * z) {
+    {   int ret = r_R1(z);
+        if (ret == 0) return 0; /* call R1, line 102 */
+        if (ret < 0) return ret;
+    }
+    {   int m1 = z->l - z->c; (void)m1; /* and, line 102 */
+        if (out_grouping_b(z, g_v, 97, 232, 0)) return 0;
+        z->c = z->l - m1;
+        {   int m2 = z->l - z->c; (void)m2; /* not, line 102 */
+            if (!(eq_s_b(z, 3, s_14))) goto lab0;
+            return 0;
+        lab0:
+            z->c = z->l - m2;
+        }
+    }
+    {   int ret = slice_del(z); /* delete, line 102 */
+        if (ret < 0) return ret;
+    }
+    {   int ret = r_undouble(z);
+        if (ret == 0) return 0; /* call undouble, line 103 */
+        if (ret < 0) return ret;
+    }
+    return 1;
+}
+
+static int r_standard_suffix(struct SN_env * z) {
+    int among_var;
+    {   int m1 = z->l - z->c; (void)m1; /* do, line 107 */
+        z->ket = z->c; /* [, line 108 */
+        if (z->c <= z->lb || z->p[z->c - 1] >> 5 != 3 || !((540704 >> (z->p[z->c - 1] & 0x1f)) & 1)) goto lab0;
+        among_var = find_among_b(z, a_3, 5); /* substring, line 108 */
+        if (!(among_var)) goto lab0;
+        z->bra = z->c; /* ], line 108 */
+        switch(among_var) {
+            case 0: goto lab0;
+            case 1:
+                {   int ret = r_R1(z);
+                    if (ret == 0) goto lab0; /* call R1, line 110 */
+                    if (ret < 0) return ret;
+                }
+                {   int ret = slice_from_s(z, 4, s_15); /* <-, line 110 */
+                    if (ret < 0) return ret;
+                }
+                break;
+            case 2:
+                {   int ret = r_en_ending(z);
+                    if (ret == 0) goto lab0; /* call en_ending, line 113 */
+                    if (ret < 0) return ret;
+                }
+                break;
+            case 3:
+                {   int ret = r_R1(z);
+                    if (ret == 0) goto lab0; /* call R1, line 116 */
+                    if (ret < 0) return ret;
+                }
+                if (out_grouping_b(z, g_v_j, 97, 232, 0)) goto lab0;
+                {   int ret = slice_del(z); /* delete, line 116 */
+                    if (ret < 0) return ret;
+                }
+                break;
+        }
+    lab0:
+        z->c = z->l - m1;
+    }
+    {   int m2 = z->l - z->c; (void)m2; /* do, line 120 */
+        {   int ret = r_e_ending(z);
+            if (ret == 0) goto lab1; /* call e_ending, line 120 */
+            if (ret < 0) return ret;
+        }
+    lab1:
+        z->c = z->l - m2;
+    }
+    {   int m3 = z->l - z->c; (void)m3; /* do, line 122 */
+        z->ket = z->c; /* [, line 122 */
+        if (!(eq_s_b(z, 4, s_16))) goto lab2;
+        z->bra = z->c; /* ], line 122 */
+        {   int ret = r_R2(z);
+            if (ret == 0) goto lab2; /* call R2, line 122 */
+            if (ret < 0) return ret;
+        }
+        {   int m4 = z->l - z->c; (void)m4; /* not, line 122 */
+            if (!(eq_s_b(z, 1, s_17))) goto lab3;
+            goto lab2;
+        lab3:
+            z->c = z->l - m4;
+        }
+        {   int ret = slice_del(z); /* delete, line 122 */
+            if (ret < 0) return ret;
+        }
+        z->ket = z->c; /* [, line 123 */
+        if (!(eq_s_b(z, 2, s_18))) goto lab2;
+        z->bra = z->c; /* ], line 123 */
+        {   int ret = r_en_ending(z);
+            if (ret == 0) goto lab2; /* call en_ending, line 123 */
+            if (ret < 0) return ret;
+        }
+    lab2:
+        z->c = z->l - m3;
+    }
+    {   int m5 = z->l - z->c; (void)m5; /* do, line 126 */
+        z->ket = z->c; /* [, line 127 */
+        if (z->c - 1 <= z->lb || z->p[z->c - 1] >> 5 != 3 || !((264336 >> (z->p[z->c - 1] & 0x1f)) & 1)) goto lab4;
+        among_var = find_among_b(z, a_4, 6); /* substring, line 127 */
+        if (!(among_var)) goto lab4;
+        z->bra = z->c; /* ], line 127 */
+        switch(among_var) {
+            case 0: goto lab4;
+            case 1:
+                {   int ret = r_R2(z);
+                    if (ret == 0) goto lab4; /* call R2, line 129 */
+                    if (ret < 0) return ret;
+                }
+                {   int ret = slice_del(z); /* delete, line 129 */
+                    if (ret < 0) return ret;
+                }
+                {   int m6 = z->l - z->c; (void)m6; /* or, line 130 */
+                    z->ket = z->c; /* [, line 130 */
+                    if (!(eq_s_b(z, 2, s_19))) goto lab6;
+                    z->bra = z->c; /* ], line 130 */
+                    {   int ret = r_R2(z);
+                        if (ret == 0) goto lab6; /* call R2, line 130 */
+                        if (ret < 0) return ret;
+                    }
+                    {   int m7 = z->l - z->c; (void)m7; /* not, line 130 */
+                        if (!(eq_s_b(z, 1, s_20))) goto lab7;
+                        goto lab6;
+                    lab7:
+                        z->c = z->l - m7;
+                    }
+                    {   int ret = slice_del(z); /* delete, line 130 */
+                        if (ret < 0) return ret;
+                    }
+                    goto lab5;
+                lab6:
+                    z->c = z->l - m6;
+                    {   int ret = r_undouble(z);
+                        if (ret == 0) goto lab4; /* call undouble, line 130 */
+                        if (ret < 0) return ret;
+                    }
+                }
+            lab5:
+                break;
+            case 2:
+                {   int ret = r_R2(z);
+                    if (ret == 0) goto lab4; /* call R2, line 133 */
+                    if (ret < 0) return ret;
+                }
+                {   int m8 = z->l - z->c; (void)m8; /* not, line 133 */
+                    if (!(eq_s_b(z, 1, s_21))) goto lab8;
+                    goto lab4;
+                lab8:
+                    z->c = z->l - m8;
+                }
+                {   int ret = slice_del(z); /* delete, line 133 */
+                    if (ret < 0) return ret;
+                }
+                break;
+            case 3:
+                {   int ret = r_R2(z);
+                    if (ret == 0) goto lab4; /* call R2, line 136 */
+                    if (ret < 0) return ret;
+                }
+                {   int ret = slice_del(z); /* delete, line 136 */
+                    if (ret < 0) return ret;
+                }
+                {   int ret = r_e_ending(z);
+                    if (ret == 0) goto lab4; /* call e_ending, line 136 */
+                    if (ret < 0) return ret;
+                }
+                break;
+            case 4:
+                {   int ret = r_R2(z);
+                    if (ret == 0) goto lab4; /* call R2, line 139 */
+                    if (ret < 0) return ret;
+                }
+                {   int ret = slice_del(z); /* delete, line 139 */
+                    if (ret < 0) return ret;
+                }
+                break;
+            case 5:
+                {   int ret = r_R2(z);
+                    if (ret == 0) goto lab4; /* call R2, line 142 */
+                    if (ret < 0) return ret;
+                }
+                if (!(z->B[0])) goto lab4; /* Boolean test e_found, line 142 */
+                {   int ret = slice_del(z); /* delete, line 142 */
+                    if (ret < 0) return ret;
+                }
+                break;
+        }
+    lab4:
+        z->c = z->l - m5;
+    }
+    {   int m9 = z->l - z->c; (void)m9; /* do, line 146 */
+        if (out_grouping_b(z, g_v_I, 73, 232, 0)) goto lab9;
+        {   int m_test = z->l - z->c; /* test, line 148 */
+            if (z->c - 1 <= z->lb || z->p[z->c - 1] >> 5 != 3 || !((2129954 >> (z->p[z->c - 1] & 0x1f)) & 1)) goto lab9;
+            if (!(find_among_b(z, a_5, 4))) goto lab9; /* among, line 149 */
+            if (out_grouping_b(z, g_v, 97, 232, 0)) goto lab9;
+            z->c = z->l - m_test;
+        }
+        z->ket = z->c; /* [, line 152 */
+        if (z->c <= z->lb) goto lab9;
+        z->c--; /* next, line 152 */
+        z->bra = z->c; /* ], line 152 */
+        {   int ret = slice_del(z); /* delete, line 152 */
+            if (ret < 0) return ret;
+        }
+    lab9:
+        z->c = z->l - m9;
+    }
+    return 1;
+}
+
+extern int dutch_ISO_8859_1_stem(struct SN_env * z) {
+    {   int c1 = z->c; /* do, line 159 */
+        {   int ret = r_prelude(z);
+            if (ret == 0) goto lab0; /* call prelude, line 159 */
+            if (ret < 0) return ret;
+        }
+    lab0:
+        z->c = c1;
+    }
+    {   int c2 = z->c; /* do, line 160 */
+        {   int ret = r_mark_regions(z);
+            if (ret == 0) goto lab1; /* call mark_regions, line 160 */
+            if (ret < 0) return ret;
+        }
+    lab1:
+        z->c = c2;
+    }
+    z->lb = z->c; z->c = z->l; /* backwards, line 161 */
+
+    {   int m3 = z->l - z->c; (void)m3; /* do, line 162 */
+        {   int ret = r_standard_suffix(z);
+            if (ret == 0) goto lab2; /* call standard_suffix, line 162 */
+            if (ret < 0) return ret;
+        }
+    lab2:
+        z->c = z->l - m3;
+    }
+    z->c = z->lb;
+    {   int c4 = z->c; /* do, line 163 */
+        {   int ret = r_postlude(z);
+            if (ret == 0) goto lab3; /* call postlude, line 163 */
+            if (ret < 0) return ret;
+        }
+    lab3:
+        z->c = c4;
+    }
+    return 1;
+}
+
+extern struct SN_env * dutch_ISO_8859_1_create_env(void) { return SN_create_env(0, 2, 1); }
+
+extern void dutch_ISO_8859_1_close_env(struct SN_env * z) { SN_close_env(z, 0); }
+