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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - -fansi-escape-codes should set Windows console mode"
href="https://bugs.llvm.org/show_bug.cgi?id=38817">38817</a>
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<th>Summary</th>
<td>-fansi-escape-codes should set Windows console mode
</td>
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>Windows NT
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Driver
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>kpreisert@gmail.com
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>The Windows console in recent versions actually supports ANSI escape codes, see
<a href="https://docs.microsoft.com/en-us/windows/console/console-virtual-terminal-sequences">https://docs.microsoft.com/en-us/windows/console/console-virtual-terminal-sequences</a>.
For some reason, this does not yet work correctly with Clang. I tried setting
-fansi-escape-codes, but then I see the ANSI sequences themselves printed,
instead of the colors that the ANSI sequences should produce:
clang-cl.exe: ←[0;1;31merror: ←[0mno input files←[0m
Probably the console mode is not set correctly, so the
ENABLE_VIRTUAL_TERMINAL_PROCESSING flag should be set with SetConsoleMode.
You might also want to have a look into
<a href="https://blogs.msdn.microsoft.com/commandline/2018/08/02/windows-command-line-introducing-the-windows-pseudo-console-conpty/">https://blogs.msdn.microsoft.com/commandline/2018/08/02/windows-command-line-introducing-the-windows-pseudo-console-conpty/</a>
and optionally use the new API if available, but that's another topic.</pre>
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