String Handling in M7 Script

Overview

M7 Script provides robust string handling with support for single-quoted, double-quoted, and backtick-quoted strings, along with interpolation and escape sequences for enhanced flexibility.

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1. String Types

Single-Quoted Strings (')

• Used for literal strings with no variable interpolation.
• Supports escape sequences.

var single = 'Hello, World!';
var escaped = 'This is a backslash: \\';

Double-Quoted Strings (")

• Supports escape sequences and special character handling.
• Does not support variable interpolation.

var double = "Hello\nWorld!";
print(double);
// Output:
// Hello
// World!

Backtick-Quoted Strings (`) – Interpolated Strings

• Supports variable interpolation.
• Allows expressions inside ${}.

var name = "Alice";
var greeting = `Hello, ${name}!`;
print(greeting); // Outputs: Hello, Alice!

• Expressions can be used inside interpolated strings.

var a = 5;
var b = 10;
print(`Sum: ${a + b}`); // Outputs: Sum: 15

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2. Escape Sequences

M7 supports the following escape sequences within single and double-quoted strings:

Escape Sequence	Meaning
\n	Newline
\t	Tab
\\	Backslash
\"	Double quote
\'	Single quote

var text = "Line 1\nLine 2";
print(text);
// Output:
// Line 1
// Line 2

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3. String Concatenation

M7 supports two methods for string concatenation: + and . operators.

var firstName = "John";
var lastName = "Doe";
var fullName = firstName + " " + lastName;
print(fullName); // Outputs: John Doe

var part1 = "Hello";
var part2 = "World";
var message = part1 . ", " . part2 . "!";
print(message); // Outputs: Hello, World!

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4. Multi-Line Strings

• Strings can span multiple lines using escaped newlines (\).
• Backtick-quoted strings support natural multi-line syntax.

var multiline = `
This is a
multi-line string.`;
print(multiline);

var escapedMultiline = "This is a\nmultiline string.";
print(escapedMultiline);

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5. Planned Feature: Raw Strings

• M7 does not yet support raw string literals (r"text" or r'...'), but this is a planned feature.
• Raw strings will disable escape sequences and allow unprocessed text.

var raw = r"C:\Users\Alice\Documents"; // Planned feature

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This document provides an overview of string handling in M7 Script, including string types, interpolation, escape sequences, concatenation, and multi-line support.