Chaining of commands does not work when add_typer is used

[dhoomakethu]

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Example Code

# This works

import typer

app = typer.Typer(chain=True)

@app.command()
def cmd1(ctx: typer.Context, name: str = "123"):
    print(f"In command 1  {name}")

@app.command()
def cmd2(ctx: typer.Context, name: str = "345"):
    print(f"In command 2  {name}")

if __name__ == "__main__":
    app()

# Output
In command 1  34345
In command 2  4546

## This does not work
import typer

app = typer.Typer(chain=True)
app2 = typer.Typer(chain=True)


@app.command()
def cmd1(ctx: typer.Context, name: str = "123"):
    print(f"In command 1  {name}")

@app2.command()
def cmd2(ctx: typer.Context, name: str = "345"):
    print(f"In command 2  {name}")


app.add_typer(app2)

if __name__ == "__main__"
     app()

## Output
Error: No such command 'cmd2'

Description

Add Typer objects to an app with add_typer method and try to chain commands across apps does not work. Chaining works for commands under the same app.

Operating System

macOS

Operating System Details

No response

Typer Version

0.6.1

Python Version

Python 3.8.13

Additional Context

No response

[PHAC-LewisLiu]

Enabling chain for the subcommand makes it hard to interpret whether the next command is part of the subgroup or main group. What worked from me is to only have chain enabled for the main app but not for the subcommand apps.

app = typer.Typer(chain=True)
app2 = typer.Typer(chain=False)