Italics or bold at start or end of string

[mayeulk]

Sometimes, some spaces are italicized (or bold) in the source pptx file. In this case, if text starts or end with a horizontal space,
then the _ or __ will not have the desired effect; hence better conversion is possible by fixing the orginal python code at:

pptx2md/pptx2md/outputter.py

Lines 183 to 187 in 39bef65

	def get_accent(self, text):
	return ' _' + text + '_ '
	def get_strong(self, text):
	return ' __' + text + '__ '

:

 def get_accent(self, text):
   return ' _' + text.strip(' \t') + '_ '
 def get_strong(self, text):
   return ' __' + text.strip(' \t') + '__ '

[mayeulk]

See PR #95

I have tested that PR in several pptx file with success.
The following might work too (but I have not tested it):

# For emphasis
def get_accent(self, text):
    stripped = text.strip(' \t')          # move inner leading/trailing spaces outside
    outer = text[: len(text) - len(text.lstrip(' \t'))]  # leading spaces
    outer += text[len(text.rstrip(' \t')):]               # trailing spaces
    return outer + '_' + stripped + '_' + outer

Or maybe:

def get_accent(self, text):
    inner = text.strip(' \t')
    pad = ' ' if text != inner else ' '   # keep surrounding space for word separation
    return pad + '_' + inner + '_' + pad

def get_strong(self, text):
    inner = text.strip(' \t')
    pad = ' '
    return pad + '__' + inner + '__' + pad