mq: add parent node IDs to MQ patches on qrefresh/qnew
The goal of this patch is to add the IDs of the parents of applied MQ patches
into the patch file headers whenever qnew or qrefresh are run.
This will serve as a reminder of when the patches last applied cleanly and
will let us do more intelligent things in the future, such as:
* Resolve conflicts found when qpushing to a new location by merging
instead of simply showing rejects.
* Display better diffs of versioned MQ patches because we can tell how the
patched files have changed in the meantime.
Here are the new rules this patch introduces. They are checked in this order:
* If a patch currently has old, plain-style patch headers ("From:" and
"Date:") do not change the style or add any new headers.
* If the 'mq.plain' configuration setting is true, only plain-style
headers will be used for all MQ patches.
* qnew will initialize new patches with HG-style headers and fill in the
"# Parent" header with the appropriate parent node.
* qrefresh will refresh the "# Parent" header with the current parent of
the current patch.
#!/bin/sh
# Test the plumbing of mq.git option
# Automatic upgrade itself is tested elsewhere.
echo "[extensions]" >> $HGRCPATH
echo "mq=" >> $HGRCPATH
echo "[diff]" >> $HGRCPATH
echo "nodates=1" >> $HGRCPATH
hg init repo-auto
cd repo-auto
echo '% git=auto: regular patch creation'
echo a > a
hg add a
hg qnew -d '0 0' -f adda
cat .hg/patches/adda
echo '% git=auto: git patch creation with copy'
hg cp a b
hg qnew -d '0 0' -f copy
cat .hg/patches/copy
echo '% git=auto: git patch when using --git'
echo regular > regular
hg add regular
hg qnew -d '0 0' --git -f git
cat .hg/patches/git
echo '% git=auto: regular patch after qrefresh without --git'
hg qrefresh -d '0 0'
cat .hg/patches/git
cd ..
hg init repo-keep
cd repo-keep
echo '[mq]' > .hg/hgrc
echo 'git = KEEP' >> .hg/hgrc
echo '% git=keep: git patch with --git'
echo a > a
hg add a
hg qnew -d '0 0' -f --git git
cat .hg/patches/git
echo '% git=keep: git patch after qrefresh without --git'
echo a >> a
hg qrefresh -d '0 0'
cat .hg/patches/git
cd ..
hg init repo-yes
cd repo-yes
echo '[mq]' > .hg/hgrc
echo 'git = yes' >> .hg/hgrc
echo '% git=yes: git patch'
echo a > a
hg add a
hg qnew -d '0 0' -f git
cat .hg/patches/git
echo '% git=yes: git patch after qrefresh'
echo a >> a
hg qrefresh -d '0 0'
cat .hg/patches/git
cd ..
hg init repo-no
cd repo-no
echo '[diff]' > .hg/hgrc
echo 'git = True' >> .hg/hgrc
echo '[mq]' > .hg/hgrc
echo 'git = False' >> .hg/hgrc
echo '% git=no: regular patch with copy'
echo a > a
hg add a
hg qnew -d '0 0' -f adda
hg cp a b
hg qnew -d '0 0' -f regular
cat .hg/patches/regular
echo '% git=no: regular patch after qrefresh with copy'
hg cp a c
hg qrefresh -d '0 0'
cat .hg/patches/regular
cd ..