I'm using the geany 1.32 default installation on ubuntu 18.04 64bit to edit test.md file.
for H1 - H6 headers, the "#" signs are bold, but not the rest of header, i.e. "# Header" only has bold for '#' not for the word 'Header'.
`**bold**` does not show bold, neither does `*italiic*` displays italic.
I can customize them all using filetypes.markdown, except for the H1-H6 headers, the header is not impacted at all as mentioned above, for example:
`header1=0xFFCB4F;0x1E1E1E;true;false` this change will make `#` bold with specified background/front color, but not the header content, i.e. "Header1" in `# Header1` stays non-bold.
At least I would like to have all markdown headers shown as bold inside Geany without the need of any previewer