follow-up to docx export

[Melkiades]

Refinements need the following fixes:

• [x] refactor "auto" widths to have layout = "fixed" otherwise. See #766
• [x] topleft vertical alignment and boldness
• [ ] topleft could be merged with flextable::merge_at but then indentation could be inexact (and row counts need an exception)
• [x] translation of character width to mm or pt (fix width) - Lets rely on Word for wrapping and paginating (closed)
• [ ] find a way to test docx output (not easy)
• [x] remove somehow tbl from theme; independent from rtables object (need some thinking for label_row boldness). Maybe can be null and assigned when in tt_to_flextable or error?
• [ ] low border in first page is missing if it spans multiple tables (could not find the option to change this behavior)
• [ ] Add a vignette about exports and update README with docx
• [ ] merge file template and doc file usage
• [x] cast (...) from export to tt_to_flextable
• [x] add limits 6-12 for font_size
• [ ] add selection of different pages (from export not from theme (or both?))
• [ ] #924
• [ ] #925
• [ ] #926

[clarkliming]

may I ask if we can allow the table to be exported into a existing file?

[Melkiades]

may I ask if we can allow the table to be exported into a existing file?

You should be able with the template_file option. I did not test it fully though! Meaning that I do not know if the template format will be overloaded or vice-versa. It should just added with the specified style

[clarkliming]

I see. I was wondering if we should only use file as the only argument, like if file exists and is a docx file then append result to it; if file does not exist then start from new doc files.

[Melkiades]

I see. I was wondering if we should only use file as the only argument, like if file exists and is a docx file then append result to it; if file does not exist then start from new doc files.

yes it makes sense if you think it is simpler I will add it to this issue