prompt hangs when verbose is enabled

[dmaes]

• [x] I've checked the existing issues and I'm not duplicating a report.
• [x] I'm using the latest version of zimfw.
• [x] I've checked the Changelog and I'm not being affected by documented changes.
• [x] I've checked the 📢 Announcements and I'm not being affected by announced changes.
• [x] I was able to reproduce the issue with a clean installation of Zim.
• [x] I've pasted the output of zimfw info below.

Describe the bug
Shell hangs after executing a command inside a git repository, prompt is not shown

Steps to reproduce
The fist 4 steps restart the shell with a clean installation of Zim in a temporary directory. Use exec zsh when restarting the terminal or restarting the shell is needed.

1. cd ${$(mktemp -d):A}
2. ZDOTDIR=${PWD} HOME=${PWD} ZIM_HOME=${PWD}/.zim exec zsh
3. curl -fsSL https://raw.githubusercontent.com/zimfw/install/master/install.zsh | zsh
4. exec zsh
5. Use following config:

   zstyle ':zim:git-info' verbose yes
   zstyle ':zim:git-info:branch' format '%b'
   zstyle ':zim:git-info:commit' format '%c'
   zstyle ':zim:git-info:clean' format '%F{green}'
   zstyle ':zim:git-info:dirty' format '%F{yellow}'
   zstyle ':zim:git-info:keys' format 'prompt' ' %F{blue}git:(%F{cyan}%C%D%b%c%F{blue})%f'

Current behavior
Shell hangs after executing a command inside a git repository, prompt is not shown

Expected behavior
Prompt is shown

zimfw info

zimfw version: 1.9.1 (built at 2022-05-24 21:25:10 UTC, previous commit is 5bcfb8c)
ZIM_HOME:      /home/dmaes/.config/zim
Zsh version:   5.9
System info:   Linux inuits-t490 5.19.2-1-default #1 SMP PREEMPT_DYNAMIC Thu Aug 18 05:06:49 UTC 2022 (6c252ef) x86_64 x86_64 x86_64 GNU/Linux

Additional context
While debugging, it seems the problem lies with the asynchronously running of $cmds. Hanging happens when $cmds is empty. As much as adding a simple /bin/true to the $cmds array when in the if ! zstyle -t ':zim:git-info' verbose else-block fixes this.

[ericbn]

Hi @dmaes. Good catch! I can reproduce it replacing the zstyle defininions in ~/.zim/modules/asciiship/asciiship.zsh-theme by the ones you provided.

[dmaes]

Thanks :)