rewriteutil: handle dropped commits when updating description hashes
In looking to leverage this with the absorb extension, the old -> new mapping
there allows the new value to be None. We could filter that out and not pass it
to this method, but it seems worth a message to the user. (I wonder if these
should be an info or warning, because it's unlikely people are using `-v`
regularly.)
Differential Revision: https://phab.mercurial-scm.org/D9181
Setup
$ PYTHONPATH=$TESTDIR/..:$PYTHONPATH
$ export PYTHONPATH
$ cat > $TESTTMP/pretxnchangegroup.sh << EOF
> #!/bin/sh
> env | egrep "^HG_USERVAR_(DEBUG|BYPASS_REVIEW)" | sort
> exit 0
> EOF
$ cat >> $HGRCPATH << EOF
> [hooks]
> pretxnchangegroup = sh $TESTTMP/pretxnchangegroup.sh
> EOF
$ hg init repo
$ hg clone -q repo child
$ cd child
Test pushing vars to repo with pushvars.server not set
$ echo b > a
$ hg commit -Aqm a
$ hg push --pushvars "DEBUG=1" --pushvars "BYPASS_REVIEW=true"
pushing to $TESTTMP/repo
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files
Setting pushvars.sever = true and then pushing.
$ echo [push] >> $HGRCPATH
$ echo "pushvars.server = true" >> $HGRCPATH
$ echo b >> a
$ hg commit -Aqm a
$ hg push --pushvars "DEBUG=1" --pushvars "BYPASS_REVIEW=true"
pushing to $TESTTMP/repo
searching for changes
adding changesets
adding manifests
adding file changes
HG_USERVAR_BYPASS_REVIEW=true
HG_USERVAR_DEBUG=1
added 1 changesets with 1 changes to 1 files
Test pushing var with empty right-hand side
$ echo b >> a
$ hg commit -Aqm a
$ hg push --pushvars "DEBUG="
pushing to $TESTTMP/repo
searching for changes
adding changesets
adding manifests
adding file changes
HG_USERVAR_DEBUG=
added 1 changesets with 1 changes to 1 files
Test pushing bad vars
$ echo b >> a
$ hg commit -Aqm b
$ hg push --pushvars "DEBUG"
pushing to $TESTTMP/repo
searching for changes
abort: unable to parse variable 'DEBUG', should follow 'KEY=VALUE' or 'KEY=' format
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