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Log STDERR of external renderer when it fails #22442

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merged 1 commit into from
Jan 13, 2023
Merged

Log STDERR of external renderer when it fails #22442

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5 changes: 4 additions & 1 deletion modules/markup/external/external.go
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@
package external

import (
"bytes"
"fmt"
"io"
"os"
Expand Down Expand Up @@ -132,11 +133,13 @@ func (p *Renderer) Render(ctx *markup.RenderContext, input io.Reader, output io.
if !p.IsInputFile {
cmd.Stdin = input
}
var stderr bytes.Buffer
cmd.Stdout = output
cmd.Stderr = &stderr
process.SetSysProcAttribute(cmd)

if err := cmd.Run(); err != nil {
return fmt.Errorf("%s render run command %s %v failed: %w", p.Name(), commands[0], args, err)
return fmt.Errorf("%s render run command %s %v failed: %w\nStderr: %s", p.Name(), commands[0], args, err, stderr.String())
}
return nil
}