Problem with colon (:) in pane commands in yaml-session-files

[abelbabel]

Hi,

there seems to be a problem with colons in pane commands. See the following example yaml-session-file. Escaping with backslash (\) has no effect. Using single ticks (') instead of double ticks (") has no effect.
I'm using tmuxp 1.9.3 on Ubuntu 18.04, installed via pip.

session_name: buggy_session
windows:
  - window_name: bug_window
    panes:
      # the following works
      - echo "a bug with colon:"
      # the following gives no output
      - echo "a bug with colon: a"
      # the following results in no start of session and in error: yaml.scanner.ScannerError: while scanning a quoted scalar
      #- echo "a bug with colon: "

Maybe I missed a documentation somewhere, which says how to deal with colons in commands. Otherwise (if I did not and if it is not really a bug) a documentation would be great.

Kind regards,
abelbabel

[zappolowski]

This is due how the file is parsed.

- echo "a bug with colon: a"

is considered a dictionary with key echo "a bug with colon" and value a". If you need to enforce parsing it as string, you have to enclose the full line in single quotes:

- 'echo "a bug with colon: a"'

PS: Also take note of the different highlighting of this message.