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Document -k option.

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Peter Hinch 2018-08-28 11:52:33 +01:00
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FONT_TO_PY.md
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@ -57,6 +57,9 @@ Example usage to produce a file `myfont.py` with height of 23 pixels:
made to display an out-of-range character. Default 63 (ASCII "?"). made to display an out-of-range character. Default 63 (ASCII "?").
* -c or --charset Option to restrict the characters in the font to a specific * -c or --charset Option to restrict the characters in the font to a specific
set. See below. set. See below.
* -k or --charset_file Obtain the character set from a file. Typical use is
for alternative character sets such as Cyrillic: the file must contain the
character set to be included. An example file is `cyrillic_subset`.
The -c option reduces the size of the font file. If the font file is frozen as The -c option reduces the size of the font file. If the font file is frozen as
bytecode this will not reduce RAM usage but it will conserve flash. An example bytecode this will not reduce RAM usage but it will conserve flash. An example
@ -65,6 +68,11 @@ usage for a digital clock font:
```shell ```shell
$ font_to_py.py Arial.ttf 20 arial_clock.py -c 1234567890: $ font_to_py.py Arial.ttf 20 arial_clock.py -c 1234567890:
``` ```
Example usage with the -k option:
```shell
font_to_py.py FreeSans.ttf 20 freesans_cyr_20.py -k cyrillic_subset
```
If a character set is specified, `--smallest` and `--largest` should not be If a character set is specified, `--smallest` and `--largest` should not be
specified: these values are computed from the charcater set. specified: these values are computed from the charcater set.