mergestate: raise structured exception for unsupported merge records
We're going to catch this exception in 'hg summary' to print a better error
message.
This code is pretty untested, so there are no changes to test output. In
upcoming patches we're going to test the output more thoroughly.
$ echo 'raise Exception("bit bucket overflow")' > badext.py
$ abspath=`pwd`/badext.py
$ cat <<EOF >> $HGRCPATH
> [extensions]
> gpg =
> hgext.gpg =
> badext = $abspath
> badext2 =
> EOF
$ hg -q help help 2>&1 |grep extension
*** failed to import extension badext from $TESTTMP/badext.py: bit bucket overflow
*** failed to import extension badext2: No module named badext2
show traceback
$ hg -q help help --traceback 2>&1 | egrep ' extension|^Exception|Traceback|ImportError'
*** failed to import extension badext from $TESTTMP/badext.py: bit bucket overflow
Traceback (most recent call last):
Exception: bit bucket overflow
*** failed to import extension badext2: No module named badext2
Traceback (most recent call last):
ImportError: No module named badext2
show traceback for ImportError of hgext.name if debug is set
(note that --debug option isn't applied yet when loading extensions)
$ (hg -q help help --traceback --config ui.debug=True 2>&1) \
> | grep -v '^ ' \
> | egrep 'extension..[^p]|^Exception|Traceback|ImportError|not import'
*** failed to import extension badext from $TESTTMP/badext.py: bit bucket overflow
Traceback (most recent call last):
Exception: bit bucket overflow
could not import hgext.badext2 (No module named badext2): trying badext2
Traceback (most recent call last):
ImportError: No module named badext2
*** failed to import extension badext2: No module named badext2
Traceback (most recent call last):
ImportError: No module named badext2