extdiff: drop the command alias without options example in the help text
In the dropped example, the extension would look for 'vdiff.diffargs' in the
configuration, and not finding it, would run kdiff3 without the configured
options. That's not obvious to a new user who sees a kdiff3 configuration in
the prepackaged mergetools.rc file, and sees that kdiff3 still runs. While it
is conceivable that the user wants a kdiff3 command that runs without the
preconfigured options, it is more likely what they want is this, which uses the
canned options:
[alias]
vdiff = kdiff3
[extdiff]
kdiff3 =
We could mention alias here, but that seems like it belongs elswhere.
hide outer repo
$ hg init
Invalid syntax: no value
$ cat > .hg/hgrc << EOF
> novaluekey
> EOF
$ hg showconfig
hg: parse error at $TESTTMP/.hg/hgrc:1: novaluekey
[255]
Invalid syntax: no key
$ cat > .hg/hgrc << EOF
> =nokeyvalue
> EOF
$ hg showconfig
hg: parse error at $TESTTMP/.hg/hgrc:1: =nokeyvalue
[255]
Test hint about invalid syntax from leading white space
$ cat > .hg/hgrc << EOF
> key=value
> EOF
$ hg showconfig
hg: parse error at $TESTTMP/.hg/hgrc:1: key=value
unexpected leading whitespace
[255]
$ cat > .hg/hgrc << EOF
> [section]
> key=value
> EOF
$ hg showconfig
hg: parse error at $TESTTMP/.hg/hgrc:1: [section]
unexpected leading whitespace
[255]
Reset hgrc
$ echo > .hg/hgrc
Test case sensitive configuration
$ echo '[Section]' >> $HGRCPATH
$ echo 'KeY = Case Sensitive' >> $HGRCPATH
$ echo 'key = lower case' >> $HGRCPATH
$ hg showconfig Section
Section.KeY=Case Sensitive
Section.key=lower case
Test "%unset"
$ cat >> $HGRCPATH <<EOF
> [unsettest]
> local-hgrcpath = should be unset (HGRCPATH)
> %unset local-hgrcpath
>
> global = should be unset (HGRCPATH)
>
> both = should be unset (HGRCPATH)
>
> set-after-unset = should be unset (HGRCPATH)
> EOF
$ cat >> .hg/hgrc <<EOF
> [unsettest]
> local-hgrc = should be unset (.hg/hgrc)
> %unset local-hgrc
>
> %unset global
>
> both = should be unset (.hg/hgrc)
> %unset both
>
> set-after-unset = should be unset (.hg/hgrc)
> %unset set-after-unset
> set-after-unset = should be set (.hg/hgrc)
> EOF
$ hg showconfig unsettest
unsettest.set-after-unset=should be set (.hg/hgrc)
Test exit code when no config matches
$ hg config Section.idontexist
[1]