test-install: embed wix namespace for Python 2.6 compatibility According to doc, the syntax is "{uri}tag". https://docs.python.org/2.7/library/xml.etree.elementtree.html#parsing-xml-with-namespaces

fileset: add hint for list error to use or

revset: add hint for list error to use or

error: make ParseError inherit from HintException

error: refactor OutOfBandError to inherit from HintException

phases: mention how to make secret commits in help

mq: use fallback patch name if no alpha-numeric in summary line (issue5025) Before this patch, "hg qimport -r REV" fails, if the summary line of description of REV doesn't contain any alpha-numeric bytes. In this case, all bytes in the summary line 'title' are dropped from 'namebase' by the code path below. namebase = re.sub('[\s\W_]+', '_', title.lower()).strip('_') 'makepatchname()' immediately returns this empty string as valid patch name, because patch name conflicting against empty string never exists. Then, "hg qimport -r REV" is aborted at creation of patch file with empty filename. This situation isn't so rare. For example, ordinary texts in Japanese often consist of non alpha-numeric bytes in UTF-8. This patch makes 'makepatchname()' use fallback patch name if the summary line of imported revision doesn't contain any alpha-numeric bytes.

osutil: c_ssize_t is only available in Python >= 2.7

check-seclevel: pass a ui to the extension loader Without this, if an import error occurs (as with pypy), the attempt to report it fails since ui is None.

check-seclevel: add a --debug option This will make it possible to get semi-meaningful tracebacks if an import error occurs. Why care? Trying to run this script under pypy currently fails, but the true error is obscured.