De hyphenate a word with hyphens to matched word - Repl: https://repl.it/@loretoparisi/DeHyphen

dehyphen.py

import re

text = "oh-oh-oh c-c-c-c-come to home today c-c-c-c-come to me fine-tuning"

print(re.sub(r'(\w+(?:-))+(\w+)', '\\2', text))
print(re.sub(r'(?<!\S)(\w{1,3})(?:-\1)*-(\w+)(?!\S)', '\\2', text))

#pattern = r"(?<=-)\w+(?=[^-\w])"
pattern = r"(?<!\S)(\w{1,3})(?:-\1)*-(\w+)(?!\S)"
r = re.compile(pattern, flags=re.I | re.X | re.UNICODE)
for m in r.finditer(text):
    word = m.group()
    characterOffsetBegin = m.start()
    print(word, characterOffsetBegin)


pattern = r"(?<!\S)(\w{1,1})(?:-\1)*-(\w+)(?!\S)"
text = re.sub(pattern, r'\2', text)
print(text)

# c-c-come
pattern = r"(?<!\S)(\w{1,1})(?:-\1)*-(\w+)(?!\S)"
text = re.sub(pattern, r'\2', text)
print(text)

# oh-oh-oh
pattern = r"(?<!\S)(\w{1,2})(?:-\1)*-(\w+)(?!\S)"
text = re.sub(pattern, r'\2', text)
print(text)

def de_hyphen(s):
    '''
        find hyphenated words and replace with matched word
        it supports single and multiple chars between hyphen
        c-c-come or oh-oh.ho
        @TODO: it does not handle words like `pro-tip`, where there
        is no repeating sub-word lemma into the hyphenated part 
        like in oh-oh or c-c-comma
    '''

    # c-c-come
    pattern = r"(?<!\S)(\w{1,1})(?:-\1)*-(\w+)(?!\S)"
    s = re.sub(pattern, r'\2', s)

    # oh-oh-oh
    pattern = r"(?<!\S)(\w{1,2})(?:-\1)*-(\w+)(?!\S)"
    s = re.sub(pattern, r'\2', s)
    
    return s