repo: rephrase the "missing requirement" error message
Unknown requirements will now be reported as:
abort: repository requires features unknown to this Mercurial: largefiles!
(see http://mercurial.selenic.com/wiki/MissingRequirement for more information)
Some features of this phrasing:
* avoid double ':' in abort message
* make it more clear who requires and knows what
* don't quote the requirement names - it is not something the user entered or
need the exact spelling of ... and it is "identifiers" that are unambiguous
anyway
* remove double hint by removing "(upgrade Mercurial)" comment
* don't mention upgrading Mercurial without mentioning enabling the feature -
instead, just refer to wiki page for both
* don't just talk about "details", talk about "more information"
$ "$TESTDIR/hghave" execbit || exit 80
$ hg init repo
$ cd repo
$ echo foo > foo
$ chmod 644 foo
$ hg ci -qAm '644'
$ chmod 755 foo
$ hg ci -qAm '755'
reverting to rev 0
$ hg revert -a -r 0
reverting foo
$ hg st
M foo
$ hg diff --git
diff --git a/foo b/foo
old mode 100755
new mode 100644
$ cd ..