Make autocomplete scan up to 2 times the terminal height number of rows.

extensions/Autocomplete/src/Autocomplete.ts

@@ -15,8 +15,6 @@ import {
 let log: Logger = null;
 let context: ExtensionContext = null;
 
-const MAX_SCAN_ROWS = 50;
-
 export function activate(_context: ExtensionContext): any {
   context = _context;
   log = context.logger;
@@ -49,14 +47,16 @@ function collectWords(): string[] {
   let blockIndex = blocks.length -1;
   const screenLines: string[] = [];
 
-  while (screenLines.length < MAX_SCAN_ROWS && blockIndex >= 0) {
+  const maxScanRows = context.window.activeTerminal.screen.height * 2;
+
+  while (screenLines.length < maxScanRows && blockIndex >= 0) {
     const block = blocks[blockIndex];
     if (block.type === TerminalOutputType) {
       const details = <TerminalOutputDetails> block.details;
       if (details.hasPty) {
-        scanScreen(context.window.activeTerminal.screen, screenLines);
+        scanScreen(context.window.activeTerminal.screen, screenLines, maxScanRows);
       }
-      scanScreen(details.scrollback, screenLines);
+      scanScreen(details.scrollback, screenLines, maxScanRows);
     }
     blockIndex--;
   }
@@ -68,8 +68,8 @@ function collectWords(): string[] {
   return words;
 }
 
-function scanScreen(screen: Screen, screenLines: string[]): void {
-  for(let i=screen.height-1; i>=0 && screenLines.length<MAX_SCAN_ROWS; i--) {
+function scanScreen(screen: Screen, screenLines: string[], maxScanRows: number): void {
+  for(let i=screen.height-1; i>=0 && screenLines.length<maxScanRows; i--) {
     const line = screen.getLineText(i);
     if (line.trim() !== "") {
       screenLines.push(line);