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Add /system-as-user for models without system role support.#493

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lmstudio-ai:mainfrom
ajac-zero:system-as-prompt
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Add /system-as-user for models without system role support.#493
ajac-zero wants to merge 2 commits into
lmstudio-ai:mainfrom
ajac-zero:system-as-prompt

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@ajac-zero

@ajac-zero ajac-zero commented Mar 4, 2026

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Addresses #458

Currently, lms chat injects a system prompt into every conversation, but not all models (such as Mistral 7b) support the system role.

This PR adds a new toggle command /system-as-user, which sets the role of the system prompt as user when enabled. This allows the command to work with Mistral 7b and similar models without omitting the system prompt entirely.

Current error:
image

New command:
image

Successful response:
image

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All contributors have signed the CLA ✍️ ✅
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Comment thread src/subcommands/chat/react/slashCommands.ts
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I have read the CLA Document and I hereby sign the CLA

@github-actions github-actions Bot added the CLA signed Indicates if all contributors have signed the CLA label Mar 4, 2026

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💡 Codex Review

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Reviewed commit: b2085c28a0

ℹ️ About Codex in GitHub

Codex has been enabled to automatically review pull requests in this repo. Reviews are triggered when you

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  • Mark a draft as ready
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Comment thread src/subcommands/chat/react/slashCommands.ts
@ajac-zero ajac-zero changed the title Add /system-as-prompt command Add options for models without system role support. Mar 4, 2026
@ajac-zero ajac-zero changed the title Add options for models without system role support. Add /system-as-user for models without system role support. Mar 4, 2026
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