Add FNM as an alternative to NVM

README.md

@@ -47,7 +47,7 @@ This theme is based loosely on [agnoster][agnoster].
  * Current RVM, rbenv or chruby (Ruby) version
  * Current virtualenv (Python) version
      * _If you use virtualenv, you will probably need to disable the default virtualenv prompt, since it doesn't play nice with fish: `set -x VIRTUAL_ENV_DISABLE_PROMPT 1`_
- * Current NVM version (Nodejs) (inactive by default; see configurations in the next paragraph)
+ * Current NVM/FNM version (Nodejs) (inactive by default; see configurations in the next paragraph)
  * Abbreviated parent directory
  * Current directory, or Git or Mercurial project name
  * Current project's repo branch (<img width="16" alt="branch-glyph" src="https://cloud.githubusercontent.com/assets/53660/8768360/53ee9b58-2e32-11e5-9977-cee0063936fa.png"> master) or detached head (`➦` d0dfd9b)
@@ -86,6 +86,7 @@ set -g theme_display_virtualenv no
 set -g theme_display_nix no
 set -g theme_display_ruby no
 set -g theme_display_nvm yes
+set -g theme_display_fnm yes
 set -g theme_display_user ssh
 set -g theme_display_hostname ssh
 set -g theme_display_vi no
@@ -125,6 +126,7 @@ set -g theme_newline_prompt '$ '
 
 - `theme_display_ruby`. Use `no` to completely hide all information about Ruby version. By default Ruby version displayed if there is the difference from default settings.
 - `theme_display_nvm`. If set to `yes`, will display current NVM node version.
+- `theme_display_fnm`. If set to `yes`, will display current FNM node version.
 - `theme_display_vagrant`. This feature is disabled by default, use `yes` to display Vagrant status in your prompt. Please note that only the VirtualBox and VMWare providers are supported.
 - `theme_display_vi`. By default the vi mode indicator will be shown if vi or hybrid key bindings are enabled. Use `no` to hide the indicator, or `yes` to show the indicator.
 - `theme_display_k8s_context`. This feature is disabled by default. Use `yes` to show the current kubernetes context (`> kubectl config current-context`).

fish_prompt.fish

@@ -40,6 +40,7 @@
 #     set -g theme_display_sudo_user yes
 #     set -g theme_display_vi no
 #     set -g theme_display_nvm yes
+#     set -g theme_display_fvm yes
 #     set -g theme_avoid_ambiguous_glyphs yes
 #     set -g theme_powerline_fonts no
 #     set -g theme_nerd_fonts yes
@@ -909,6 +910,20 @@ function __bobthefish_prompt_nvm -S -d 'Display current node version through NVM
     set_color normal
 end
 
+function __bobthefish_prompt_nvm -S -d 'Display current node version through FNM'
+    [ "$theme_display_nvm" = 'yes' -a -n "$FNM_DIR" ]
+    or return
+
+    set -l node_version (fnm current 2> /dev/null)
+
+    [ -z $node_version -o "$node_version" = 'none' -o "$node_version" = 'system' ]
+    and return
+
+    __bobthefish_start_segment $color_nvm
+    echo -ns $node_glyph $node_version ' '
+    set_color normal
+end
+
 function __bobthefish_prompt_nix -S -d 'Display current nix environment'
     [ "$theme_display_nix" = 'no' -o -z "$IN_NIX_SHELL" ]
     and return