chg: allows default hg path to be overridden Before this patch, chg will fall back to "hg" if neither CHGHG nor HG are set. This may have trouble if the "hg" in PATH is not compatible with chg, which can happen, for example, an old hg is installed in a virtualenv. Since it's very hard to do a quick hg version check from chg, after discussion in IRC with smf and marmoute, the quickest solution is to build a package with a hardcoded absolute hg path in chg. This patch makes it possible by adding a C macro HGPATH.

chg: define PRINTF_FORMAT_ for non gnu C compiler Before this patch, if __GNUC__ is not defined, PRINTF_FORMAT_ will not be defined and will cause compilation error. This patch solves the issue by making sure PRINTF_FORMAT_ is defined. It allows chg to be compiled with tcc (http://bellard.org/tcc/) by: tcc -o chg *.c

chgserver: drop bundle.mainreporoot config Before this patch, although chgserver drops repo object by setting it to None, there is another side effect loading a repo: setting bundle.mainreporoot. This patch explicitly sets it to empty to undo the side effect. It will make chg pass test-strip.t.

chgserver: drop old hack to recreate ui on HGPLAIN change It's been superseded by config/env hash. A log message is simplified as we no longer need a diff of environment variables. Also, _loadnewui() is changed to require args since it can't copy old --config values without args.