chgserver: handle ParseError during validate Currently the validate command in chgserver expects config can be loaded without issues but the config can be broken and chg will print a stacktrace instead of the parsing error, if a chg server is already running. This patch adds a handler for ParseError in validate and a new instruction "exit" to make the client exit without abortmsg. A test is also added to make sure it will behave as expected.

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init repo

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  $ hg init foo

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  $ cd foo

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ill-formed config

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  $ hg status

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  $ echo '=brokenconfig' >> $HGRCPATH

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  $ hg status

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  hg: parse error at * (glob)

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