[GRASS-git] [OSGeo/grass] e8c3ff: init: Default to Bash, fallback to sh (#1836)

[Vaclav Petras]

  Branch: refs/heads/main
  Home:   https://github.com/OSGeo/grass
  Commit: e8c3ff21ddaeb0256dc9bfa291b0136e724b06ed
      https://github.com/OSGeo/grass/commit/e8c3ff21ddaeb0256dc9bfa291b0136e724b06ed
  Author: Vaclav Petras <wenzeslaus at gmail.com>
  Date:   2021-09-03 (Fri, 03 Sep 2021)

  Changed paths:
    M lib/init/grass.py

  Log Message:
  -----------
  init: Default to Bash, fallback to sh (#1836)

* When SHELL env var was not set, sh would be used which likely unexpected if bash is on path.
* Now bash presence is tested and it is used if available.
* If there is no bash on path, sh is used as a fallback.
* Compared to the previous code, this works with an empty SHELL variable and avoids use of bare except.