Oh My Posh, prompt esthétique et configurable

Par Maxime Bréhin • Publié le 5 décembre 2022 • 4 min

Utiliser Git dans le terminal sans avoir une invite de commande / un prompt adaptés, c’est un peu comme mettre des chaussettes avec des tongues en hiver, c’est moche et c’est sous-optimal !

Le souci avec les terminaux, c’est qu’il en existe plein ! Comment alors trouver une solution adaptée à chacun ? On avait écrit il y a un bail un article décrivant comment configurer un prompt Git à la mano. Cette méthode est toujours efficace et offre le bénéfice du minimalisme. Par contre pour le design, c’est pas ouf !

Il y a quelques temps nous étions passés à Powerline, plus sympa, (un peu) portable, et qui propose quelques infos liées à quelques technos (Git, Python, Ruby). Par contre il pour le configurer on pouvait se brosser.

Et puis Oh My Posh est apparu dans nos radars ! Bien plus évoluée, plus facile à installer et à configurer, traitant d’un très large spectre de technos (voir la partie “Segments” de la doc).

On est donc vite tombé sous le charme 😍. À certains égards on peut trouver cette invite de commande trop verbeuse, mais puisqu’on peut la configurer aisément, ça devient vite facile d’en faire une version “light”.

Pour ce qui est de l’installation et de la configuration, je te renvoie directement à sa documentation qui est très bien faite !

Exemple : le mode concis

Je prends ici l’exemple de mon terminal Linux (sous-système sur Windows / WSL2) auquel je passe la configuration au chargement de Oh My Posh dans mon fichier racine .bashrc :

eval "$(oh-my-posh init bash --config ~/.ohmyposh-themes/git.omp.json)"

Le thème se contente de lister le répertoire courant et les statuts Git :

En définitive on ne gagne pas beaucoup d’espace, on supprime seulement les compléments d’analyse des technos détectées dans le répertoire du projet courant.

{
  "$schema": "https://raw.githubusercontent.com/JanDeDobbeleer/oh-my-posh/main/themes/schema.json",
  "blocks": [
    {
      "alignment": "left",
      "segments": [
        {
          "background": "#f1184c",
          "foreground": "#242424",
          "powerline_symbol": "\ue0c4",
          "style": "powerline",
          "template": "\uf0e7",
          "type": "root"
        },
        {
          "background": "#ff479c",
          "foreground": "#ffffff",
          "leading_diamond": "\ue0b6",
          "trailing_diamond": "\ue0b0",
          "powerline_symbol": "\ue0b0",
          "properties": {
            "folder_separator_icon": " \ue0b1 ",
            "home_icon": "~",
            "style": "folder"
          },
          "style": "diamond",
          "template": "\{\{ .Path \}\} ",
          "type": "path"
        },
        {
          "background": "#3a96ff",
          "background_templates": [
            "\{\{ if and (gt .Ahead 0) (gt .Behind 0) \}\}#ff4500\{\{ end \}\}",
            "\{\{ if gt .Ahead 0 \}\}#B388FF\{\{ end \}\}",
            "\{\{ if gt .Behind 0 \}\}#B388FF\{\{ end \}\}"
          ],
          "foreground": "#ffffff",
          "leading_diamond": "\ue0b6",
          "powerline_symbol": "\ue0b0",
          "properties": {
            "branch_max_length": 25,
            "fetch_stash_count": true,
            "fetch_status": true,
            "fetch_upstream_icon": true
          },
          "style": "powerline",
          "template": " \{\{ .UpstreamIcon \}\}\{\{ .HEAD \}\}\{\{ .BranchStatus \}\}",
          "trailing_diamond": "\ue0b4",
          "type": "git"
        },
        {
          "background": "#eafe34",
          "foreground": "#0d1f2d",
          "leading_diamond": "\ue0b6",
          "powerline_symbol": "\ue0b0",
          "properties": {
            "branch_max_length": 25,
            "fetch_stash_count": true,
            "fetch_status": true,
            "fetch_upstream_icon": true
          },
          "style": "powerline",
          "template": "\{\{ if .Working.Untracked \}\} \{\{ .Working.Untracked \}\}? \{\{ end \}\}",
          "trailing_diamond": "\ue0b4",
          "type": "git"
        },
        {
          "background": "#f95656",
          "foreground": "#0d1f2d",
          "leading_diamond": "\ue0b6",
          "powerline_symbol": "\ue0b0",
          "properties": {
            "branch_max_length": 25,
            "fetch_stash_count": true,
            "fetch_status": true,
            "fetch_upstream_icon": true
          },
          "style": "powerline",
          "template": "\{\{ if .Working.Unmerged \}\} \{\{ .Working.Unmerged \}\}\uf044 \{\{ end \}\}",
          "trailing_diamond": "\ue0b4",
          "type": "git"
        },
        {
          "background": "#f95656",
          "foreground": "#0d1f2d",
          "leading_diamond": "\ue0b6",
          "powerline_symbol": "\ue0b0",
          "properties": {
            "branch_max_length": 25,
            "fetch_stash_count": true,
            "fetch_status": true,
            "fetch_upstream_icon": true
          },
          "style": "powerline",
          "template": "\{\{ if .Working.Added \}\} \{\{ .Working.Added \}\}+ \{\{ end \}\}",
          "trailing_diamond": "\ue0b4",
          "type": "git"
        },
        {
          "background": "#f95656",
          "foreground": "#0d1f2d",
          "leading_diamond": "\ue0b6",
          "powerline_symbol": "\ue0b0",
          "properties": {
            "branch_max_length": 25,
            "fetch_stash_count": true,
            "fetch_status": true,
            "fetch_upstream_icon": true
          },
          "style": "powerline",
          "template": "\{\{ if .Working.Deleted \}\} \{\{ .Working.Deleted \}\}\u26cc \{\{ end \}\}",
          "trailing_diamond": "\ue0b4",
          "type": "git"
        },
        {
          "background": "#f95656",
          "foreground": "#0d1f2d",
          "leading_diamond": "\ue0b6",
          "powerline_symbol": "\ue0b0",
          "properties": {
            "branch_max_length": 25,
            "fetch_stash_count": true,
            "fetch_status": true,
            "fetch_upstream_icon": true
          },
          "style": "powerline",
          "template": "\{\{ if .Working.Modified \}\} \{\{ .Working.Modified \}\}\uf044 \{\{ end \}\}",
          "trailing_diamond": "\ue0b4",
          "type": "git"
        },
        {
          "background": "#58d060",
          "foreground": "#0d1f2d",
          "leading_diamond": "\ue0b6",
          "powerline_symbol": "\ue0b0",
          "properties": {
            "branch_max_length": 25,
            "fetch_stash_count": true,
            "fetch_status": true,
            "fetch_upstream_icon": true
          },
          "style": "powerline",
          "template": "\{\{ if .Staging.Changed \}\} \{\{ .Staging.String \}\} \uf046 \{\{ end \}\}",
          "trailing_diamond": "\ue0b4",
          "type": "git"
        },
        {
          "background": "#aeaeae",
          "foreground": "#0d1f2d",
          "leading_diamond": "\ue0b6",
          "powerline_symbol": "\ue0b0",
          "properties": {
            "branch_max_length": 25,
            "fetch_stash_count": true,
            "fetch_status": true,
            "fetch_upstream_icon": true
          },
          "style": "powerline",
          "template": "\{\{ if gt .StashCount 0 \}\} \{\{ .StashCount \}\}\u2691 \{\{ end \}\}",
          "trailing_diamond": "\ue0b4",
          "type": "git"
        },
        {
          "background": "#6CA35E",
          "foreground": "#ffffff",
          "powerline_symbol": "\ue0b0",
          "properties": {
            "fetch_version": true
          },
          "style": "powerline",
          "template": " \uf898 \{\{ if .PackageManagerIcon \}\}\{\{ .PackageManagerIcon \}\} \{\{ end \}\}\{\{ .Full \}\} ",
          "type": "node"
        },
        {
          "background": "#8ED1F7",
          "foreground": "#111111",
          "powerline_symbol": "\ue0b0",
          "properties": {
            "fetch_version": true
          },
          "style": "powerline",
          "template": " \ue626 \{\{ if .Error \}\}\{\{ .Error \}\}\{\{ else \}\}\{\{ .Full \}\}\{\{ end \}\} ",
          "type": "go"
        },
        {
          "background": "#4063D8",
          "foreground": "#111111",
          "powerline_symbol": "\ue0b0",
          "properties": {
            "fetch_version": true
          },
          "style": "powerline",
          "template": " \ue624 \{\{ if .Error \}\}\{\{ .Error \}\}\{\{ else \}\}\{\{ .Full \}\}\{\{ end \}\} ",
          "type": "julia"
        },
        {
          "background": "#FFDE57",
          "foreground": "#111111",
          "powerline_symbol": "\ue0b0",
          "properties": {
            "display_mode": "files",
            "fetch_virtual_env": false
          },
          "style": "powerline",
          "template": " \ue235 \{\{ if .Error \}\}\{\{ .Error \}\}\{\{ else \}\}\{\{ .Full \}\}\{\{ end \}\} ",
          "type": "python"
        },
        {
          "background": "#AE1401",
          "foreground": "#ffffff",
          "powerline_symbol": "\ue0b0",
          "properties": {
            "display_mode": "files",
            "fetch_version": true
          },
          "style": "powerline",
          "template": " \ue791 \{\{ if .Error \}\}\{\{ .Error \}\}\{\{ else \}\}\{\{ .Full \}\}\{\{ end \}\} ",
          "type": "ruby"
        },
        {
          "background": "#FEAC19",
          "foreground": "#ffffff",
          "powerline_symbol": "\ue0b0",
          "properties": {
            "display_mode": "files",
            "fetch_version": false
          },
          "style": "powerline",
          "template": " \uf0e7\{\{ if .Error \}\}\{\{ .Error \}\}\{\{ else \}\}\{\{ .Full \}\}\{\{ end \}\} ",
          "type": "azfunc"
        },
        {
          "background_templates": [
            "\{\{if contains \"default\" .Profile\}\}#FFA400\{\{end\}\}",
            "\{\{if contains \"jan\" .Profile\}\}#f1184c\{\{end\}\}"
          ],
          "foreground": "#ffffff",
          "powerline_symbol": "\ue0b0",
          "properties": {
            "display_default": false
          },
          "style": "powerline",
          "template": " \ue7ad \{\{ .Profile \}\}\{\{ if .Region \}\}@\{\{ .Region \}\}\{\{ end \}\} ",
          "type": "aws"
        },
        {
          "background": "#e91e63",
          "foreground": "#ffffff",
          "properties": {
            "always_enabled": true
          },
          "style": "diamond",
          "template": "\{\{ if gt .Code 0 \}\} \ue23a\{\{ end \}\}",
          "trailing_diamond": "\ue0b4",
          "type": "exit"
        }
      ],
      "type": "prompt"
    }
  ],
  "console_title_template": "\{\{ .Shell \}\} in \{\{ .Folder \}\}",
  "final_space": true,
  "version": 2
}

Exemple : le mode minimaliste Git

Un dernier exemple de configuration pour ne nous concentrer que sur Git :

{
  "$schema": "https://raw.githubusercontent.com/JanDeDobbeleer/oh-my-posh/main/themes/schema.json",
  "blocks": [
    {
      "alignment": "left",
      "segments": [
        {
          "background": "#242424",
          "foreground": "#3A86FF",
          "leading_diamond": "\ue0b6",
          "trailing_diamond": "\ue0b0",
          "properties": {
            "fetch_stash_count": true,
            "fetch_status": true,
            "fetch_upstream_icon": true
          },
          "style": "diamond",
          "template": "\{\{ .UpstreamIcon \}\}\{\{ .HEAD \}\}\{\{ if .Staging.Changed \}\} \uf046 \{\{ .Staging.String \}\}\{\{ end \}\}\{\{ if and (.Working.Changed) (.Staging.Changed) \}\} |\{\{ end \}\}\{\{ if .Working.Changed \}\} \uf044 \{\{ .Working.String \}\}\{\{ end \}\}\{\{ if gt .StashCount 0 \}\} \uf692 \{\{ .StashCount \}\}\{\{ end \}\} ",
          "type": "git"
        }
      ],
      "type": "prompt"
    }
  ],
  "console_title_template": "\{\{if .Root\}\}(Admin) \{\{end\}\}\{\{.Folder\}\}",
  "version": 2
}

Il ne s’agit ici que d’exemples simples. Tu peux en trouver pléthore d’autres dans la section “Themes” de la doc.