CODE128: reduce extended latch cut-off from 5 to 4 for better

encodation in certain cases (and no pessimizations found so far),
  props lyngklip (BWIPP);
  fix extended char latching when exactly 3 extended chars at end;
  count code set C (not digits) in loop deciding when to
  shift/latch to extended for better estimate
AZTEC: return warning if ECC < 5% (due to bit-stuffing when version
  given); return error if > 22 layers (Zint 26) for Reader
  Initialisation symbol requested for better error message
AZTEC/HANXIN/QRCODE: consolidate different ECC data size tables
  into one indexed by ECC
DBAR_EXP: check for reduced length <= 77 up front for better error
  message
HANXIN: use `malloc()` rather than `z_alloca()` for large binary
  array
QRCODE: `ecc_level` now 0-based (not 1-based)
MICROQR: consolidate different version end routines into one
  `microqr_end()` and use new `microqr_data` table to simplify code
MICROPDF417: use table for max codewords per column
library: centralize all error messages using new `errtxt()`,
  `errtxtf()`, `errtxt_adj()` funcs that protect `symbol->errtxt`
  from overflow, & try to make error messages more consistent
  thru-out, adding more feedback info to many, & use positional
  args "%n$" in prep for l10n (maybe);
  `is_sane/is_sane_lookup()` -> `not_sane/not_sane_lookup()`,
  returning 1-based position (zero on failure) instead of bool;
  `long` ints -> plain `int` (except those dealing with `ftell()`,
  `fread()` etc) as depend on int being 32-bits already
GUI: in "grpDATF.ui" use "PlainText" rather than "RichText" for
  tracker ratio examples as height of text messing up sometimes
manual: clarify Codablock-F length maximum & add examples
docs: README: pandoc 3.5, Ubuntu 24.04
CMake: use "-Wpedantic" for Clang only as GNU complains about
  `errtxtf()` positional args "%n$"

backend/vector.c

@@ -43,7 +43,9 @@ static int vector_add_rect(struct zint_symbol *symbol, const float x, const floa
     struct zint_vector_rect *rect;
 
     if (!(rect = (struct zint_vector_rect *) malloc(sizeof(struct zint_vector_rect)))) {
-        strcpy(symbol->errtxt, "691: Insufficient memory for vector rectangle");
+        /* NOTE: clang-tidy-20 gets confused about return value of function returning a function unfortunately,
+           so put on 2 lines (see also "postal.c" `postnet_enc()` & `planet_enc()`, same issue) */
+        errtxt(0, symbol, 691, "Insufficient memory for vector rectangle");
         return 0;
     }
 
@@ -69,8 +71,7 @@ static int vector_add_hexagon(struct zint_symbol *symbol, const float x, const f
     struct zint_vector_hexagon *hexagon;
 
     if (!(hexagon = (struct zint_vector_hexagon *) malloc(sizeof(struct zint_vector_hexagon)))) {
-        strcpy(symbol->errtxt, "692: Insufficient memory for vector hexagon");
-        return 0;
+        return errtxt(0, symbol, 692, "Insufficient memory for vector hexagon");
     }
     hexagon->next = NULL;
     hexagon->x = x;
@@ -93,8 +94,7 @@ static int vector_add_circle(struct zint_symbol *symbol, const float x, const fl
     struct zint_vector_circle *circle;
 
     if (!(circle = (struct zint_vector_circle *) malloc(sizeof(struct zint_vector_circle)))) {
-        strcpy(symbol->errtxt, "693: Insufficient memory for vector circle");
-        return 0;
+        return errtxt(0, symbol, 693, "Insufficient memory for vector circle");
     }
     circle->next = NULL;
     circle->x = x;
@@ -119,8 +119,7 @@ static int vector_add_string(struct zint_symbol *symbol, const unsigned char *te
     struct zint_vector_string *string;
 
     if (!(string = (struct zint_vector_string *) malloc(sizeof(struct zint_vector_string)))) {
-        strcpy(symbol->errtxt, "694: Insufficient memory for vector string");
-        return 0;
+        return errtxt(0, symbol, 694, "Insufficient memory for vector string");
     }
     string->next = NULL;
     string->x = x;
@@ -132,8 +131,7 @@ static int vector_add_string(struct zint_symbol *symbol, const unsigned char *te
     string->halign = halign;
     if (!(string->text = (unsigned char *) malloc(string->length + 1))) {
         free(string);
-        strcpy(symbol->errtxt, "695: Insufficient memory for vector string text");
-        return 0;
+        return errtxt(0, symbol, 695, "Insufficient memory for vector string text");
     }
     memcpy(string->text, text, string->length);
     string->text[string->length] = '\0';
@@ -439,14 +437,12 @@ INTERNAL int plot_vector(struct zint_symbol *symbol, int rotate_angle, int file_
         return error_number;
     }
     if (symbol->rows <= 0) {
-        strcpy(symbol->errtxt, "697: No rows");
-        return ZINT_ERROR_INVALID_OPTION;
+        return errtxt(ZINT_ERROR_INVALID_OPTION, symbol, 697, "No rows");
     }
 
     /* Allocate memory */
     if (!(vector = symbol->vector = (struct zint_vector *) malloc(sizeof(struct zint_vector)))) {
-        strcpy(symbol->errtxt, "696: Insufficient memory for vector header");
-        return ZINT_ERROR_MEMORY;
+        return errtxt(ZINT_ERROR_MEMORY, symbol, 696, "Insufficient memory for vector header");
     }
     vector->rectangles = NULL;
     vector->hexagons = NULL;