Most basic suggestion UI

Author: daxian-dbw

PSReadLine/DummySuggestion.cs

@@ -5,12 +5,32 @@ namespace Pseudo
 {
     internal class DummySuggestion
     {
-        private static readonly Dictionary<string, string> s_suggestions = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
+        private static readonly List<string> s_suggestions;
+
+        static DummySuggestion()
+        {
+            s_suggestions = new List<string>()
+            {
+                "git branch -r",
+                "git checkout -b",
+                "git checkout master",
+                "git fetch --all -p",
+                "git status",
+                "git diff",
+                "git diff --cached",
+                "git add -u",
+                "git add -A"
+            };
+        }
+
         internal static string GetCommandLineSuggestion(string text)
         {
-            if (s_suggestions.TryGetValue(text, out string suggestion))
+            foreach (string candidate in s_suggestions)
             {
-                return suggestion;
+                if (candidate.StartsWith(text, StringComparison.OrdinalIgnoreCase))
+                {
+                    return candidate;
+                }
             }
 
             return null;

PSReadLine/Render.cs

@@ -320,7 +320,7 @@ void MaybeEmphasize(int i, string currColor)
                     }
 
                     currentLogicalLine += 1;
-                    if (currentLogicalLine > _consoleBufferLines.Count - 1)
+                    if (currentLogicalLine == _consoleBufferLines.Count)
                     {
                         _consoleBufferLines.Add(new StringBuilder(COMMON_WIDEST_CONSOLE_WIDTH));
                     }
@@ -333,10 +333,7 @@ void MaybeEmphasize(int i, string currColor)
                     activeColor = string.Empty;
 
                     UpdateColorsIfNecessary(Options._continuationPromptColor);
-                    foreach (char c in Options.ContinuationPrompt)
-                    {
-                        _consoleBufferLines[currentLogicalLine].Append(c);
-                    }
+                    _consoleBufferLines[currentLogicalLine].Append(Options.ContinuationPrompt);
 
                     if (inSelectedRegion)
                     {
@@ -365,6 +362,39 @@ void MaybeEmphasize(int i, string currColor)
                 _consoleBufferLines[currentLogicalLine].Append("\x1b[0m");
             }
 
+            if (suggestion != null)
+            {
+                // TODO: write suggestion out in dark black by default, but it needs to be configurable.
+                color = "\x1b[90m";
+                UpdateColorsIfNecessary(color);
+
+                foreach (char charToRender in suggestion)
+                {
+                    if (charToRender == '\n')
+                    {
+                        currentLogicalLine += 1;
+                        if (currentLogicalLine == _consoleBufferLines.Count)
+                        {
+                            _consoleBufferLines.Add(new StringBuilder(COMMON_WIDEST_CONSOLE_WIDTH));
+                        }
+
+                        _consoleBufferLines[currentLogicalLine].Append(Options.ContinuationPrompt);
+                    }
+                    else
+                    {
+                        if (char.IsControl(charToRender))
+                        {
+                            _consoleBufferLines[currentLogicalLine].Append('^');
+                            _consoleBufferLines[currentLogicalLine].Append((char)('@' + charToRender));
+                        }
+                        else
+                        {
+                            _consoleBufferLines[currentLogicalLine].Append(charToRender);
+                        }
+                    }
+                }
+            }
+
             if (_statusLinePrompt != null)
             {
                 currentLogicalLine += 1;