cat: move most of the implementation into cmdutils.cat()
This will allow access to the reusable parts from subrepos, similar to add(),
forget(), etc.
color: add effect to the template symbol table
Previously, words like 'red' had to be protected by quotes before passing to
the label template function. Now, we add color effects to the symbol table so
that commands like,
$ hg log -r . -T "{label(red, node|short)}\n"
can work without the need for quoting.
amend: invoke editor forcibly when "--edit" option is specified
422981492ace introduces "--edit" option into "hg commit", but it
doesn't work for "hg commit --amend", because
422981492ace prepares
for editor invocation only around "commitfunc()" internal function,
which is used only for temporary amend commit by "cmdutil.amend()".
Actual commit message editing is executed in "cmdutil.amend()".
This patch invokes editor forcibly when "--edit" option is specified
for "hg commit --amend", even if commit message is specified
explicitly by "--message" or "--logfile".
This patch also removes useless handling for commit message and editor
invocation around "commitfunc()" internal function.
commit: abolish useless "--force-editor" internal option for "hg commit"
"--force-editor" option for "hg commit" has been useless since
12721a20ed30, which makes "commands.tag()" invoke "cmdutil.commit()"
directly instead of "commands.commit()" with "--force-editor" internal
option.
This patch abolishes useless "--force-editor" internal option for "hg
commit".
branchmap: log events related to branch cache
The blackblox log will now contain log events when the branch caches are
updated and written.