don't return uninitialized memory from bdiff.blocks()
bdiff.blocks() returns a dummy match at the end of both files; the
length of that chunk is never set, so it will sometimes contain random
heap garbage. There are apparently workarounds for this elsewhere:
# bdiff sometimes gives huge matches past eof, this check eats them,
import mercurial.util
def dumbdecode(s, cmd):
return s.replace('\n', '\r\n')
def dumbencode(s, cmd):
return s.replace('\r\n', '\n')
def clevertest(s, cmd):
if '\0' in s: return False
return True
def cleverdecode(s, cmd):
if clevertest(s, cmd):
return dumbdecode(s, cmd)
return s
def cleverencode(s, cmd):
if clevertest(s, cmd):
return dumbencode(s, cmd)
return s
mercurial.util.filtertable.update({
'dumbdecode:': dumbdecode,
'dumbencode:': dumbencode,
'cleverdecode:': cleverdecode,
'cleverencode:': cleverencode,
})