Don't use printf for escaping for performance reasons.

src/plugins/autocompletion_utils/Common.ts

@@ -1,4 +1,4 @@
-import {statsIn, resolveDirectory, directoryName, joinPath, isImage} from "../../utils/Common";
+import {statsIn, resolveDirectory, directoryName, joinPath, isImage, escapeFilePath} from "../../utils/Common";
 import {
     FileInfo, AutocompletionContext, AutocompletionProvider,
 } from "../../Interfaces";
@@ -9,7 +9,6 @@ import {fontAwesome} from "../../views/css/FontAwesome";
 import {colors} from "../../views/css/colors";
 import {CSSObject} from "../../views/css/definitions";
 import {StatusCode} from "../../utils/Git";
-import {executeCommand} from "../../PTY";
 import {ASTNode, leafNodeAt, serializeReplacing} from "../../shell/Parser";
 
 type Style = { value: string; css: CSSObject};
@@ -227,19 +226,19 @@ const filesSuggestions = (filter: (info: FileInfo) => boolean) => async(tokenVal
         .filter(info => info.name.startsWith(".") ? basePath.startsWith(".") : true)
         .filter(info => info.stat.isDirectory() || filter(info))
         .map(async info => {
-            // Shell out to printf to ecape the filename, it is the only thing that truly knows how to do that
-            const escapedName: string = await executeCommand("printf", ['"%q"', `"${info.name}"`], "/");
+            const escapedName: string = escapeFilePath(info.name);
+
             if (info.stat.isDirectory()) {
                 return new Suggestion({
                     value: joinPath(tokenDirectory, escapedName + Path.sep),
-                    displayValue: escapedName + Path.sep,
+                    displayValue: info.name + Path.sep,
                     style: styles.directory,
                     promptSerializer: noEscapeSpacesPromptSerializer,
                 });
             } else {
                 return new Suggestion({
                     value: joinPath(tokenDirectory, escapedName),
-                    displayValue: escapedName,
+                    displayValue: info.name,
                     style: styles.file(info, joinPath(directoryPath, escapedName)),
                     promptSerializer: noEscapeSpacesPromptSerializer,
                 });

src/utils/Common.ts

@@ -335,6 +335,10 @@ export function mapObject<T, R>(object: Dictionary<T>, mapper: (key: string, val
     return result;
 }
 
+export function escapeFilePath(unescaped: string): string {
+  return unescaped.replace(/([\s'"\[\]<>#$%^&*()])/g, "\\$1");
+}
+
 const baseConfigDirectory = Path.join(homeDirectory, ".black-screen");
 export const presentWorkingDirectoryFilePath = Path.join(baseConfigDirectory, "presentWorkingDirectory");
 export const historyFilePath = Path.join(baseConfigDirectory, "history");