view tests/test-config.t @ 23993:eedade006458

revset: introduce _parsealiasdefn to parse alias definitions strictly

This patch introduces "_parsealiasdefn" to parse alias definitions
strictly. For example, it can avoid problems below, which current
implementation can't.

  - the shorter name argument breaks referring the longer name one in
    the definition, if the former is completely prefix of the latter

    for example, the alias definition "foo($1, $10) = $1 or $10" is
    parsed as "_aliasarg('$1') or _aliasarg('$1')0" and causes parse
    error, because tail "0" of "_aliasarg('$1')0" is invalid.

  - argument names in the quoted string are broken

    for example, the definition "foo($1) = $1 or desc('$1')" is parsed
    as "_aliasarg('$1') or desc('_aliasarg(\'$1\')')" and causes
    unexpected description matching against not '$1' but '_aliasarg(\'$1\')'.

To decrease complication of patch, current implementation for alias
definitions is replaced by "_parsealiasdefn" in the subsequent
patch. This patch just introduces it.

This patch defines "_parsealiasdefn" not as a method of "revsetalias"
class but as a one of "revset" module, because of ease of testing by
doctest.

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 (glob)
  [255]

Invalid syntax: no key

  $ cat > .hg/hgrc << EOF
  > =nokeyvalue
  > EOF
  $ hg showconfig
  hg: parse error at $TESTTMP/.hg/hgrc:1: =nokeyvalue (glob)
  [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 (glob)
  unexpected leading whitespace
  [255]

  $ cat > .hg/hgrc << EOF
  >  [section]
  > key=value
  > EOF
  $ hg showconfig
  hg: parse error at $TESTTMP/.hg/hgrc:1:  [section] (glob)
  unexpected leading whitespace
  [255]

Reset hgrc

  $ echo > .hg/hgrc

Test case sensitive configuration

  $ cat <<EOF >> $HGRCPATH
  > [Section]
  > KeY = Case Sensitive
  > key = lower case
  > EOF

  $ 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]