change the default anaconda format in config templates

Also document how to configure it.

See #762.

config/p10k-classic.zsh

@@ -856,10 +856,32 @@
   #####################[ anaconda: conda environment (https://conda.io/) ]######################
   # Anaconda environment color.
   typeset -g POWERLEVEL9K_ANACONDA_FOREGROUND=37
-  # Don't show Python version next to the anaconda environment name.
-  typeset -g POWERLEVEL9K_ANACONDA_SHOW_PYTHON_VERSION=false
-  # Separate environment name from Python version only with a space.
-  typeset -g POWERLEVEL9K_ANACONDA_{LEFT,RIGHT}_DELIMITER=
+
+  # Anaconda segment format. The following parameters are available within the expansion.
+  #
+  # - CONDA_PREFIX                 Absolute path to the active Anaconda/Miniconda environment.
+  # - CONDA_DEFAULT_ENV            Name of the active Anaconda/Miniconda environment.
+  # - CONDA_PROMPT_MODIFIER        Configurable prompt modifier (see below).
+  # - P9K_ANACONDA_PYTHON_VERSION  Current python version (python --version).
+  #
+  # CONDA_PROMPT_MODIFIER can be configured with the following command:
+  #
+  #   conda config --set env_prompt '({default_env}) '
+  #
+  # The last argument is a Python format string that can use the following variables:
+  #
+  # - prefix       The same as CONDA_PREFIX.
+  # - default_env  The same as CONDA_DEFAULT_ENV.
+  # - name         The last segment of CONDA_PREFIX.
+  # - stacked_env  Comma-separated list of names in the environment stack. The first element is
+  #                always the same as default_env.
+  #
+  # Note: '({default_env}) ' is the default value of env_prompt.
+  #
+  # The default value of POWERLEVEL9K_ANACONDA_CONTENT_EXPANSION expands to $CONDA_PROMPT_MODIFIER
+  # without the leading '(' or the trailing ') '.
+  typeset -g POWERLEVEL9K_ANACONDA_CONTENT_EXPANSION='${${CONDA_PROMPT_MODIFIER#\(}%\) }'
+
   # Custom icon.
   # typeset -g POWERLEVEL9K_ANACONDA_VISUAL_IDENTIFIER_EXPANSION='⭐'
 

config/p10k-lean-8colors.zsh

@@ -833,10 +833,32 @@
   #####################[ anaconda: conda environment (https://conda.io/) ]######################
   # Anaconda environment color.
   typeset -g POWERLEVEL9K_ANACONDA_FOREGROUND=6
-  # Don't show Python version next to the anaconda environment name.
-  typeset -g POWERLEVEL9K_ANACONDA_SHOW_PYTHON_VERSION=false
-  # Separate environment name from Python version only with a space.
-  typeset -g POWERLEVEL9K_ANACONDA_{LEFT,RIGHT}_DELIMITER=
+
+  # Anaconda segment format. The following parameters are available within the expansion.
+  #
+  # - CONDA_PREFIX                 Absolute path to the active Anaconda/Miniconda environment.
+  # - CONDA_DEFAULT_ENV            Name of the active Anaconda/Miniconda environment.
+  # - CONDA_PROMPT_MODIFIER        Configurable prompt modifier (see below).
+  # - P9K_ANACONDA_PYTHON_VERSION  Current python version (python --version).
+  #
+  # CONDA_PROMPT_MODIFIER can be configured with the following command:
+  #
+  #   conda config --set env_prompt '({default_env}) '
+  #
+  # The last argument is a Python format string that can use the following variables:
+  #
+  # - prefix       The same as CONDA_PREFIX.
+  # - default_env  The same as CONDA_DEFAULT_ENV.
+  # - name         The last segment of CONDA_PREFIX.
+  # - stacked_env  Comma-separated list of names in the environment stack. The first element is
+  #                always the same as default_env.
+  #
+  # Note: '({default_env}) ' is the default value of env_prompt.
+  #
+  # The default value of POWERLEVEL9K_ANACONDA_CONTENT_EXPANSION expands to $CONDA_PROMPT_MODIFIER
+  # without the leading '(' or the trailing ') '.
+  typeset -g POWERLEVEL9K_ANACONDA_CONTENT_EXPANSION='${${CONDA_PROMPT_MODIFIER#\(}%\) }'
+
   # Custom icon.
   # typeset -g POWERLEVEL9K_ANACONDA_VISUAL_IDENTIFIER_EXPANSION='⭐'
 

config/p10k-lean.zsh

@@ -833,10 +833,32 @@
   #####################[ anaconda: conda environment (https://conda.io/) ]######################
   # Anaconda environment color.
   typeset -g POWERLEVEL9K_ANACONDA_FOREGROUND=37
-  # Don't show Python version next to the anaconda environment name.
-  typeset -g POWERLEVEL9K_ANACONDA_SHOW_PYTHON_VERSION=false
-  # Separate environment name from Python version only with a space.
-  typeset -g POWERLEVEL9K_ANACONDA_{LEFT,RIGHT}_DELIMITER=
+
+  # Anaconda segment format. The following parameters are available within the expansion.
+  #
+  # - CONDA_PREFIX                 Absolute path to the active Anaconda/Miniconda environment.
+  # - CONDA_DEFAULT_ENV            Name of the active Anaconda/Miniconda environment.
+  # - CONDA_PROMPT_MODIFIER        Configurable prompt modifier (see below).
+  # - P9K_ANACONDA_PYTHON_VERSION  Current python version (python --version).
+  #
+  # CONDA_PROMPT_MODIFIER can be configured with the following command:
+  #
+  #   conda config --set env_prompt '({default_env}) '
+  #
+  # The last argument is a Python format string that can use the following variables:
+  #
+  # - prefix       The same as CONDA_PREFIX.
+  # - default_env  The same as CONDA_DEFAULT_ENV.
+  # - name         The last segment of CONDA_PREFIX.
+  # - stacked_env  Comma-separated list of names in the environment stack. The first element is
+  #                always the same as default_env.
+  #
+  # Note: '({default_env}) ' is the default value of env_prompt.
+  #
+  # The default value of POWERLEVEL9K_ANACONDA_CONTENT_EXPANSION expands to $CONDA_PROMPT_MODIFIER
+  # without the leading '(' or the trailing ') '.
+  typeset -g POWERLEVEL9K_ANACONDA_CONTENT_EXPANSION='${${CONDA_PROMPT_MODIFIER#\(}%\) }'
+
   # Custom icon.
   # typeset -g POWERLEVEL9K_ANACONDA_VISUAL_IDENTIFIER_EXPANSION='⭐'
 

config/p10k-rainbow.zsh

@@ -892,10 +892,32 @@
   # Anaconda environment color.
   # typeset -g POWERLEVEL9K_ANACONDA_FOREGROUND=0
   # typeset -g POWERLEVEL9K_ANACONDA_BACKGROUND=4
-  # Don't show Python version next to the anaconda environment name.
-  typeset -g POWERLEVEL9K_ANACONDA_SHOW_PYTHON_VERSION=false
-  # Separate environment name from Python version only with a space.
-  typeset -g POWERLEVEL9K_ANACONDA_{LEFT,RIGHT}_DELIMITER=
+
+  # Anaconda segment format. The following parameters are available within the expansion.
+  #
+  # - CONDA_PREFIX                 Absolute path to the active Anaconda/Miniconda environment.
+  # - CONDA_DEFAULT_ENV            Name of the active Anaconda/Miniconda environment.
+  # - CONDA_PROMPT_MODIFIER        Configurable prompt modifier (see below).
+  # - P9K_ANACONDA_PYTHON_VERSION  Current python version (python --version).
+  #
+  # CONDA_PROMPT_MODIFIER can be configured with the following command:
+  #
+  #   conda config --set env_prompt '({default_env}) '
+  #
+  # The last argument is a Python format string that can use the following variables:
+  #
+  # - prefix       The same as CONDA_PREFIX.
+  # - default_env  The same as CONDA_DEFAULT_ENV.
+  # - name         The last segment of CONDA_PREFIX.
+  # - stacked_env  Comma-separated list of names in the environment stack. The first element is
+  #                always the same as default_env.
+  #
+  # Note: '({default_env}) ' is the default value of env_prompt.
+  #
+  # The default value of POWERLEVEL9K_ANACONDA_CONTENT_EXPANSION expands to $CONDA_PROMPT_MODIFIER
+  # without the leading '(' or the trailing ') '.
+  typeset -g POWERLEVEL9K_ANACONDA_CONTENT_EXPANSION='${${CONDA_PROMPT_MODIFIER#\(}%\) }'
+
   # Custom icon.
   # typeset -g POWERLEVEL9K_ANACONDA_VISUAL_IDENTIFIER_EXPANSION='⭐'