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Fix overlapping markdown entities being skipped

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Lonami Exo 2017-11-06 10:37:22 +01:00
parent 4f80429215
commit 07ece83aba
1 changed files with 7 additions and 1 deletions
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8
telethon/extensions/markdown.py
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@ -78,7 +78,10 @@ def parse(message, delimiters=None, url_re=None):
(i + len(url_match.group(1))) // 2, (i + len(url_match.group(1))) // 2,
(Mode.URL, url_match.group(2).decode('utf-16le')) (Mode.URL, url_match.group(2).decode('utf-16le'))
)) ))
i += len(url_match.group(1)) # We matched the delimiter which is now gone, and we'll add
# +2 before next iteration which will make us skip a character.
# Go back by one utf-16 encoded character (-2) to avoid it.
i += len(url_match.group(1)) - 2
if not url_match: if not url_match:
for d, m in delimiters.items(): for d, m in delimiters.items():
@ -90,9 +93,12 @@ def parse(message, delimiters=None, url_re=None):
if current == Mode.NONE: if current == Mode.NONE:
result.append(i // 2) result.append(i // 2)
current = m current = m
# No need to i -= 2 here because it's been already
# checked that next character won't be a delimiter.
else: else:
result[-1] = (result[-1], i // 2, current) result[-1] = (result[-1], i // 2, current)
current = Mode.NONE current = Mode.NONE
i -= 2 # Delimiter matched and gone, go back 1 char
break break
if i < len(message): if i < len(message):