gs1: New AIs 7041 (GSCN 23-272) (packagetype) and 716 (GSCN-24-157)

CODE49: Better error message on ZINT_ERROR_TOO_LONG
manual: Use floating pt notation for floating pt args on options
backend/tools/data: Remove overlooked "GB2312.TXT" from git
raster: `size2` -> `prev_size`; one line `malloc()`s
C25/CODE128: some code fiddling
tests/PNG: Add some more text examples

docs/manual.pmd

@@ -574,12 +574,12 @@ codeset from U+0000 to U+D7FF and U+E000 to U+FFFF (i.e. excluding surrogates).
 Not to be confused with the Windows Bitmap file format BMP!
 
 (Special escape sequences are available for Code 128 only to manually switch
-Code Sets and/or insert special FNC1 characters - see [6.1.10.1 Standard Code
-128 (ISO 15417)] for details.)
+Code Sets and insert special FNC1 characters - see [6.1.10.1 Standard Code 128
+(ISO 15417)] for details.)
 
 Input data can be read directly from file using the `-i` or `--input` switch as
 shown below. The input file is assumed to be UTF-8 formatted unless an
-alternative mode is selected. This command replaces the use of the `-d` switch.
+alternative mode is selected. This option replaces the use of the `-d` switch.
 
 ```bash
 zint -i somefile.txt
@@ -885,7 +885,7 @@ zint --height=100 -d "This Text"
 
 This specifies a symbol height of 100 times the X-dimension of the symbol.
 
-The default height of most linear barcodes is 50X, but this can be changed for
+The default height of most linear barcodes is 50.0X, but this can be changed for
 barcodes whose specifications give a standard height by using the switch
 `--compliantheight`. For instance
 
@@ -893,7 +893,7 @@ barcodes whose specifications give a standard height by using the switch
 zint -b LOGMARS -d "This Text" --compliantheight
 ```
 
-will produce a barcode of height 45.455X instead of the normal default of 50X.
+will produce a barcode of height 45.455X instead of the normal default of 50.0X.
 The flag also causes Zint to return a warning if a non-compliant height is
 given:
 
@@ -1073,7 +1073,7 @@ followed by the angle of rotation as shown below.
 ## 4.9 Adjusting Image Size (X-dimension)
 
 The size of the image can be altered using the `--scale` option, which sets the
-X-dimension. The default scale is 1.
+X-dimension. The default scale is 1.0.
 
 The scale is multiplied by 2 (with the exception of MaxiCode) before being
 applied to the X-dimension. For MaxiCode, it is multiplied by 10 for raster
@@ -1197,8 +1197,8 @@ be used together if required, but only for vector output.
 
 The gap between the barcode and the text can be adjusted using the `--textgap`
 option, where the gap is given in X-dimensions, and may be negative (minimum
--5X, maximum 10X). The default gap is 1X. Note that a very small gap may cause
-accented texts to overlap with the barcode:
+-5.0X, maximum 10.0X). The default gap is 1X. Note that a very small gap may
+cause accented texts to overlap with the barcode:
 
 ![`zint -d "Áccent" --textgap=0.1`](images/code128_textgap.svg){.lin}
 
@@ -2818,7 +2818,7 @@ You can adjust the gap between the main symbol and an add-on in integral
 multiples of the X-dimension by setting `--addongap` (API `option_2`) to a value
 between 9 (default) and 12. The height in X-dimensions that the guard bars
 descend below the main bars can be adjusted by setting `--guarddescent` (API
-`guard_descent`) to a value between 0 and 20 (default 5).
+`guard_descent`) to a value between 0.0 and 20.0 (default 5.0).
 
 #### 6.1.3.2 UPC Version E
 
@@ -2859,7 +2859,7 @@ You can adjust the gap between the main symbol and an add-on in integral
 multiples of the X-dimension by setting `--addongap` (API `option_2`) to a value
 between 7 (default) and 12. The height in X-dimensions that the guard bars
 descend below the main bars can be adjusted by setting `--guarddescent` (API
-`guard_descent`) to a value between 0 and 20 (default 5).
+`guard_descent`) to a value between 0.0 and 20.0 (default 5.0).
 
 ### 6.1.4 EAN (European Article Number) (ISO 15420)