By setting the `HGSUBVERSION_BINDINGS environment variable to either
`SWIG' or `Subvertpy', the choice of bindings can be forced at
runtime. (For ease of use, the comparison is case-insensitive.)
Examples:
% HGSUBVERSION_BINDINGS=swig hg version --svn
Mercurial Distributed SCM (version 1.6+172-b25e1ced9861)
...
hgsubversion: 1.1.2+43-276742da2d85
Subversion: 1.6.12
bindings: SWIG
% HGSUBVERSION_BINDINGS=subvertpy hg version --svn
Mercurial Distributed SCM (version 1.6+172-b25e1ced9861)
...
hgsubversion: 1.1.2+43-276742da2d85
Subversion: 1.6.12
bindings: Subvertpy 0.7.4
% HGSUBVERSION_BINDINGS=none hg version --svn
Mercurial Distributed SCM (version 1.6+172-b25e1ced9861)
...
abort: cannot use hgsubversion; bindings disabled using HGSUBVERSION_BINDINGS!
The new file contains three sections: The first one is based on the
README and contains instructions on how to use hgsubversion. The
second one mentions the most notable shortcomings of hgsubversion. The
third and final section documents how to customise hgsubversion.
