contrib/lisp/org-e-texinfo: Remove markup from headlines when
exporting to ensure info can process them properly
* contrib/lisp/org-e-texinfo.el (org-e-texinfo--generate-menu-items):
Use org-e-texinfo--sanitize-headline to ensure markup is stripped
before being used for sectioning and menu information. Nodes and
menus can fail because of formatting and section titles do not show
any formatting when viewed in an info-viewer.
(org-e-texinfo--sanitize-headline): Wrapper function for
org-e-texinfo--sanitize-healine-contents
(org-e-texinfo--sanitize-headline-contents): Strips markup from
headlines. It treats content recursively to ensure nested formatting
is removed as well.