- Add text_gap option to allow adjustment of vertical gap between

barcode and text
- EMF/EPS/SVG/GUI: ignore BOLD_TEXT for EAN/UPC
- DAFT: up max to 250 chars
- EMF/EPS/SVG: fix addon bars placement/length when text hidden
- Qt backend: use `QFontMetrics::horizontalAdvance()` rather than
  `boundingRect()` to calc text width (seems to be more accurate)
- library: make printf/sprintf() format arg always literal string
- output: fix errtxt nos clash;
  use array for `out_upcean_split_text()` text parts
- raster/vector: smallify addon text printing logic
- frontend: warn if output file and direct options both given;
  add TODO note about `CommandLineToArgvW()` loading shell32.dll
- manual: put HRT options in own section

backend/output.h

@@ -62,12 +62,11 @@ INTERNAL int out_process_upcean(const struct zint_symbol *symbol, int *p_main_wi
 /* Calculate large bar height i.e. linear bars with zero row height that respond to the symbol height.
    If scaler `si` non-zero (raster), then large_bar_height if non-zero or else row heights will be rounded
    to nearest pixel and symbol height adjusted */
-INTERNAL float out_large_bar_height(struct zint_symbol *symbol, int si, int *row_heights_si, int *symbol_height_si);
+INTERNAL float out_large_bar_height(struct zint_symbol *symbol, const int si, int *row_heights_si,
+                int *symbol_height_si);
 
 /* Split UPC/EAN add-on text into various constituents */
-INTERNAL void out_upcean_split_text(int upceanflag, unsigned char text[],
-                unsigned char textpart1[5], unsigned char textpart2[7], unsigned char textpart3[7],
-                unsigned char textpart4[2]);
+INTERNAL void out_upcean_split_text(const int upceanflag, const unsigned char text[], unsigned char textparts[4][7]);
 
 /* Create output file, creating sub-directories if necessary. Returns `fopen()` FILE pointer */
 INTERNAL FILE *out_fopen(const char filename[256], const char *mode);