It used to be difficult to find a sequence since the codepoints weren't
provided, just the images. This provides the codepoint list as
the 'name' of the sequence.
This also makes some other changes:
- the python template system doesn't like keyword names that have have
hyphens, so rename font-face-style to fontFaceStyle to get around this.
Thought this had been fixed earlier, but apparently it didn't end up in
a pushed commit.
- no longer insert emoji variation selector after some characters.
This was done to see what difference it made in browser behavior, but
we think now that browsers should be able to handle these sequences
without the selectors present.
- use a flag to pass name of output html file, rather than taking it as
a direct arg. other flags take multiple args, and if the html file
name comes after one of those, it gets swallowed by the other flag,
so it has to come first. This lets you put the file name anywhere
in the parameter list, the flag acts as a delimiter.
Images are shown in LTR and RTL contexts. Chrome currently doesn't
correctly render some emoji sequences, in part this is because it is
using Unicode 8 property data. At any rate, these are known Chrome
issues.
By default the tool uses all sequences that appear in any of the image
sets. To make it easier to see just the changes between a smaller
set of images and a large one, this lets you limit the sequences
to just those in the first set being compared.
Formerly, we wrote the file paths as given on the command line, the
assumption being that the output file was in the cwd and the paths
to the directories would be correct.
However if we want to generate the output file somewhere other than
the cwd the generated image paths don't work. This takes the location
of the output file into account and either generates relative paths
if the files are under the output file directory, or absolute paths
otherwise.
This uses nototools to get unicode names. It relies on new
api in nototools.unicode_data to get data/names of proposed emoji
that are not currently approved and so not in the standard data
files.
Doug Felt