rename notes/and files

autoload/denote/frontmatter.vim

@@ -1,4 +1,5 @@
-" Functions to create the front matter
+" Functions to manipulate and query the front matter
+
 " Helper function to put string in double quotes, and remove inside double
 " quotes.
 function s:escapeDQ(s)
@@ -57,3 +58,21 @@ function denote#frontmatter#new(ft, id, title, tags=[])
 				\ : g:denote_fm_md_type == 'toml' ? s:md_new_toml(a:id, a:title, a:tags)
 				\ : s:md_new_yaml(a:id, a:title, a:tags)
 endfunction
+
+" Return the frontmatter of the specified file (as a list)
+function s:getFrontmatter(filename)
+	let l:ft = fnamemodify(a:filename, ':e')
+	let l:cnt = l:ft == 'org' ? 4
+				\ : l:ft == 'txt' ? 5
+				\ : 6
+	call bufload(a:filename)
+	return getbufline(a:filename, 1, 1 + l:cnt)
+endfunction
+
+" Get title from front matter
+function denote#frontmatter#setTitle(filename, title)
+	" Retrieve front matter (number of lines depends on ft), and replace title
+	let l:frontmatter = s:getFrontmatter(a:filename)
+	call map(l:frontmatter, { _, v -> substitute(v, '^#\?+\?title:\?\s*"\?\zs.\{-\}\ze\"\?$', a:title, '')})
+	call setbufline(a:filename, 1, l:frontmatter)
+endfunction