view contrib/xml.rnc @ 48185:2f2107c01dee

dispatch: ignore failure to flush ui

When the pager dies, we get a `SIGPIPE`. That causes
`error.SignalInterrupt` to be raised ` (from `ui._catchterm()`). Any
further writes or flushes will cause further `SIGPIPE`s and furhter
`error.SignalInterrupt`. If we write or flush outside of the
try/except that handle `KeyboardInterrupt` (which
`error.SignalInterrupt` is a subclass of), then control will escape
from the `dispatch` module. Let's fix that by ignoring errors from
flushing the ui.

I would have rather fixed this by restoring the stdout and stderr
streams when the pager dies, but it gets complicated because of
multiple ui instances (ui/lui) and different pager setups between
regular hg and chg.

This changes a test in `test-pager.t`, but I don't understand why. I
would have thought that all the output from the command should have
gone to the broken pager.

Differential Revision: https://phab.mercurial-scm.org/D11627

# RelaxNG schema for "xml" log style
# Inspired by Subversion's XML log format.

start = log
node.type = xsd:string  {minLength = "40" maxLength = "40"}

log = element log { logentry+ }
logentry = element logentry {
    logentry.attlist,
    branch*, tag*, hgparent*,
    author, date,
    msg, paths?, copies?, extra*
}
logentry.attlist =
    attribute revision {xsd:nonNegativeInteger}
  & attribute node {node.type}
branch = element branch { text }
tag = element tag { text }
hgparent = element parent {hgparent.attlist, text}
hgparent.attlist =
    attribute revision {xsd:integer {minInclusive = "-1"} }
  & attribute node {node.type}
author = element author { author.attlist, text }
author.attlist =
    attribute email {text}
date = element date {xsd:dateTime}
msg = element msg {msg.attlist, text}
msg.attlist =
    attribute xml:space {"preserve"}
paths = element paths { path* }
path = element path { path.attlist, text }
path.attlist =
    # Action: (A)dd, (M)odify, (R)emove
    attribute action {"A"|"M"|"R"}
copies = element copies { copy+ }
copy = element copy { copy.attlist, text }
copy.attlist =
    attribute source {text}
extra = element extra {extra.attlist, text}
extra.attlist =
    attribute key {text}