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Log STDERR of external renderer when it fails (#22442)
When using an external renderer, STDOUT is expected to be HTML. But anything written to STDERR is currently ignored. In cases where the renderer fails, I would like to log any error messages that the external program outputs to STDERR.
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parent
a3ab82e592
commit
02ae63297b
5
modules/markup/external/external.go
vendored
5
modules/markup/external/external.go
vendored
@ -4,6 +4,7 @@
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package external
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import (
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"bytes"
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"fmt"
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"io"
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"os"
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@ -132,11 +133,13 @@ func (p *Renderer) Render(ctx *markup.RenderContext, input io.Reader, output io.
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if !p.IsInputFile {
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cmd.Stdin = input
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}
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var stderr bytes.Buffer
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cmd.Stdout = output
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cmd.Stderr = &stderr
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process.SetSysProcAttribute(cmd)
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if err := cmd.Run(); err != nil {
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return fmt.Errorf("%s render run command %s %v failed: %w", p.Name(), commands[0], args, err)
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return fmt.Errorf("%s render run command %s %v failed: %w\nStderr: %s", p.Name(), commands[0], args, err, stderr.String())
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}
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return nil
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}
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