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c6b5945356
The build runner was previously forcing child processes to have their
stderr colorization match the build runner by setting `CLICOLOR_FORCE`
or `NO_COLOR`. This is a nice idea in some cases---for instance a simple
`Run` step which we just expect to exit with code 0 and whose stderr is
not being programmatically inspected---but is a bad idea in others, for
instance if there is a check on stderr or if stderr is captured, in
which case forcing color on the child could cause checks to fail.
Instead, this commit adds a field to `std.Build.Step.Run` which
specifies a behavior for the build runner to employ in terms of
assigning the `CLICOLOR_FORCE` and `NO_COLOR` environment variables. The
default behavior is to set `CLICOLOR_FORCE` if the build runner's output
is colorized and the step's stderr is not captured, and to set
`NO_COLOR` otherwise. Alternatively, colors can be always enabled,
always disabled, always match the build runner, or the environment
variables can be left untouched so they can be manually controlled
through `env_map`.
Notably, this fixes a failure when running `zig build test-cli` in a
TTY (or with colors explicitly enabled). GitHub CI hadn't caught this
because it does not request color, but Codeberg CI now does, and we were
seeing a failure in the `zig init` test because the actual output had
color escape codes in it due to
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| .. | ||
| CheckFile.zig | ||
| CheckObject.zig | ||
| Compile.zig | ||
| ConfigHeader.zig | ||
| Fail.zig | ||
| Fmt.zig | ||
| InstallArtifact.zig | ||
| InstallDir.zig | ||
| InstallFile.zig | ||
| ObjCopy.zig | ||
| Options.zig | ||
| RemoveDir.zig | ||
| Run.zig | ||
| TranslateC.zig | ||
| UpdateSourceFiles.zig | ||
| WriteFile.zig | ||