379eeda576
* shell: fix zsh color formatting for PS1 in environments The `colorize` function in `llnl.util.tty.color` only applies proper formatting for Bash ANSI and for console output, but this is not what zsh expects for environment variables. In particular, when using `zsh`, `spack env activate -p` produces a `PS1` prompt that looks like this: ``` \[\033[0;92m\][ENVIRONMENT]\[\033[0m\] ``` For zsh the formatting should be: ``` \e[0;92m[ENVIRONMENT]\e0;m ``` - [x] Add a `zsh` option to `colorize()` to enable zsh color formatting - [x] Add conditional to choose the right `PS1` for `zsh`, `bash`, and `sh` - [x] Don't use color escapes for `sh`, as they don't print properly * convert lots of += lines to triple quotes |
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