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tests: various fixes for new unified test pattern format [ original upstream message ]

tests: add glob matching for unified tests This adds a " (glob)" marker that works like a simpler version of (re): "*" is converted to ".*", and "?" is converted to ".". Both special characters can be escaped using "\", and the backslash itself can be escaped as well. Other glob-style syntax, like "**", "[chars]", or "[!chars]", isn't supported. [ original upstream message ]

tests: require regexes in unified tests to be marked with " (re)" Consider this test: $ hg glog --template '{rev}:{node|short} "{desc}"\n' @ 2:20c4f79fd7ac "3" | | o 1:38f24201dcab "2" |/ o 0:2a18120dc1c9 "1" Because each line beginning with "|" can be compiled as a regular expression (equivalent to ".*|"), they will match any output. Similarly: $ echo foo The blank output line can be compiled as a regular expression and will also match any output. With this patch, none of the above output lines will be matched as regular expressions. A line must end in " (re)" in order to be matched as one. Lines are still matched literally first, so the following will pass: $ echo 'foo (re)' foo (re) [ original upstream message ]

tests: ensure regexes match to the end of the string Regular expressions in the test suite are currently written assuming that you need a trailing ".*" to avoid matching to the end. Instead of matching regular expressions using "^pattern", this patch makes matching more restrictive by matching "^pattern$". [ original upstream message ]

tests: don't match blank output lines as regexes in unified tests Currently, the following unified test will pass: $ echo foo A blank output line (a line containing just two spaces) will match any output. The patch modifies the unified test runner to ignore empty strings strings when do regular expression matching. [ original upstream message ]