[New-bugs-announce] [issue15768] re.sub() with re.MULTILINE not replacing all occurrences

[Eric Cousineau]

New submission from Eric Cousineau:

[Copying post I made here: http://stackoverflow.com/questions/12082886/bug-in-python-regex-re-sub-with-re-multiline]

I'm noticing some odd behavior in Python's Regex library, and I'm not sure if I'm doing something wrong.

If I run a regex on it using re.sub(), with re.MULTILINE. It seems to only replace the first few occurrences. It replaces all occurrences if I turn off re.MULTILINE, use re.subn(..., count = 0, flags = re.MULTILINE), or compile the regex using re.compile(..., re.MULTILINE).

I am running Python 2.7 on Ubuntu 12.04.

I've posted a random example on:

http://pastebin.com/49SU8Mm2 - Output from terminal
http://codepad.org/2RO2iS4O - Script, confirming behavior (except for re.subn(), which is different on 2.5)

----------
components: Regular Expressions
messages: 168909
nosy: eacousineau, ezio.melotti, mrabarnett
priority: normal
severity: normal
status: open
title: re.sub() with re.MULTILINE not replacing all occurrences
type: behavior
versions: Python 2.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue15768>
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