revset: support raw string literals
This adds support for r'...' and r"..." as string literals. Strings
with the "r" prefix will not have their escape characters interpreted.
This is especially useful for grep(), where, with regular string
literals, \number is interpreted as an octal escape code, and \b is
interpreted as the backspace character (\x08).
tests: avoid checking the exitcode of false
Solaris false returns 255 instead of 1, so we remove one unneeded instance and
replaces another with (exit 1) as suggested by Brodie Rao.
test-rename: accept solaris diff
Solaris diff gives
@@ -1,1 +1,1 @@
instead of
@@ -1 +1 @@
test-subrepo-svn: restore expr functionality for solaris
Cleanup in
22f3353bcc36 removed a syntactically incorrect and apparently
unnecessary escape of / for expr - but solaris needs it.