[bug-bash] edit and theme failures silently return exit 1 without a machine-readable stderr error

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@mkrueger arbeitet bereits daran.

Seit 04.11.2026.

  • #287 von @mkrueger — offen

Bewertung

Schwierigkeit
3/5
Geschätzter Aufwand
1-2 Tage
Anfängerfreundlichkeit
62/100
Issue-Typ
Bug
Klarheit
Größtenteils klar
Aktivitätsstatus
Aktiv
Tech-Stack
csharp
Bereich
cli

Rechercherichtung

Start by tracing how command failures reach stderr and how --output json, --quiet, and -c affect error handling; compare the failing theme use, theme validate, and edit commands with the working not-a-real-command case. Run the PowerShell reproductions in the issue and capture stdout, stderr, and exit codes. Done when these failures emit explanatory structured JSON to stderr while retaining a nonzero exit code.

Vom Indexierungsmodell aus dem Issue-Text verfasst.

Beschreibung

bug bug-bash

Environment

Windows x64, CosmosDBShell 1.1.291-preview (db49321323).
No Cosmos DB connection or credentials are required.

Repro (PowerShell)

$package = "$env:USERPROFILE\.dotnet\tools\.store\cosmosdbshell\1.1.291-preview"
$shell = Join-Path $package 'cosmosdbshell.win-x64\1.1.291-preview\tools\net10.0\win-x64\CosmosDBShell.exe'
& $shell --version
$work = Join-Path ([IO.Path]::GetTempPath()) ("cosmos-errors-" + [guid]::NewGuid().ToString("N"))
New-Item -ItemType Directory -Path $work | Out-Null
Set-Location $work
& $shell --output json -c 'theme use missing-bug-bash-theme'
"Exit code: $LASTEXITCODE"

Actual:

  • Exit code: 1
  • stdout: empty
  • stderr: empty

The same silent failure reproduces with:

& $shell --output json -c 'theme validate .\missing-theme.toml'

Exact headless edit reproduction, including input redirection and output capture:

'bug-bash sample' | Set-Content -Encoding utf8 .\sample.txt
'' | & $shell --output json -c 'edit sample.txt' 1> .\edit.stdout.txt 2> .\edit.stderr.txt
$editExit = $LASTEXITCODE
[pscustomobject]@{
    ExitCode = $editExit
    StdoutBytes = (Get-Item .\edit.stdout.txt).Length
    StderrBytes = (Get-Item .\edit.stderr.txt).Length
}

Actual: ExitCode 1, StdoutBytes 0, StderrBytes 0. Interactive external editing
should be rejected with an explanation in this context, not fail silently.
The same edit result was also observed with --quiet and default -c mode.

Expected

Failures in machine mode emit an explanatory structured JSON error object to
stderr, consistent with the documented automation contract and other commands.
The existing exit code can remain nonzero.

For example:

{"status":"error","error":"Unknown theme ..."}

Working control

& $shell --output json -c 'not-a-real-command'

This correctly returns exit code 2 and a structured stderr error:

{"status":"error","error":"'not-a-real-command' is not recognized ..."}

cat with a missing file, filter with a missing expression, and invalid ftab
formats also emit structured diagnostics; the silence is not a harness-wide
capture problem.

Impact

Automation can detect failure but cannot explain it, surface remediation, or
collect useful bug reports. Empty stderr also makes rejected interactive editing
indistinguishable from an unexplained internal failure.

Validation

Reproduced with direct child-process execution, captured stdout and stderr,
and closed/redirected stdin. The edit failure reproduces with --output json,
--quiet, and default -c machine mode. Both invalid theme operations reproduce
without a database connection.

Vorherrschende Sprache
C#
Sterne
4
Forks
7
Ø Merge
1 T. 23 Std.
Gemergte PRs (30 T.)
23

Entwicklungsumgebung

Erste Schritte

  1. Lesen Sie das ganze Issue und danach den Beitragsleitfaden des Projekts.
  2. Schreiben Sie ins Issue, dass Sie es übernehmen — das erspart doppelte Arbeit.
  3. Forken Sie das Repository und arbeiten Sie in einem Branch.
  4. Öffnen Sie einen Pull Request, der die Issue-Nummer nennt.

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