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There were two problems with the way this script used sed on OS X:
1. The OS X sed doesn't interpret "\r" in a replacement list as a
carriage-return character, (instead it was inserting a literal
'r' character).
We fix this by putting an actual ^M character into the source of
the script, (rather than a two-character escape sequence hoping
for sed to do the right thing).
2. When generating the test files with LF-CR ("\n\r") newlines, the
OS X sed was adding an undesired final newline ("\n") at the end
of the file. We avoid this by first using sed to add the ^M
before the newlines, then using tr to swap the \r and \n
characters. This way, sed never sees any lines ending with
anything but \n, so it doesn't get confused and doesn't add any
bogus extra newlines.
Tested-by: Vinson Lee <[email protected]>
Vinson's testing confirmed that this patch fixes FreeBSD as well.
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The GLSL specification has a very broad definition of what is a
newline. Namely, it can be the carriage-return character, '\r', the newline
character, '\n', or any combination of the two, (though in combination, the
two are treated as a single newline).
Here, we add a new test-runner, glcpp-test-cr-lf, that, for each possible
line-termination combination, runs through the existing test suite with all
source files modified to use those line-termination characters. Instead of
using the .expected files for this, this script assumes that the regular test
suite has been run already and expects the output to match the .out
files. This avoids getting 4 test failures for any one bug, and instead will
hopefully only report bugs actually related to the line-termination
characters.
The new testing is not yet integrated into "make check". For that, some
munging of the testdir option will be necessary, (to support "make check" with
out-of-tree builds). For now, the scripts can just be run directly by hand.
Reviewed-by: Ian Romanick <[email protected]>
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