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Code Issues Releases Activity

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.
This commit is contained in:
Jonathan Tran 2023-01-13 15:41:23 -05:00 committed by GitHub
parent a3ab82e592
commit 02ae63297b
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 4 additions and 1 deletions
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5
modules/markup/external/external.go vendored
View File

@ -4,6 +4,7 @@
package external
import (
"bytes"
"fmt"
"io"
"os"
@ -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
}