Regex正则表达式优化需求：支持斜杠及带空格斜杠分隔单词

Hey Mike, nice work on the original regex! Let's tweak it to support both space-separated and slash-separated words (including slashes with optional spaces on either side) while keeping your core rules intact.

Updated Regex #

^(?=.{0,50}$)([A-Z][a-z]*(?:\s*/?\s*[A-Z][a-z]*)*)$

Breakdown of Changes #

Let's walk through what's modified and why:

• Length Check: The initial (?=.{0,50}$) stays exactly as is—this ensures your total string length never exceeds 50 characters.
• Word Separator Flexibility: Replaced the strict space-only separator (+) with (?:\s*/?\s*). This pattern matches:
  • A single space ( )
  • A direct slash (/)
  • A slash with spaces on either side (/)
  • Any combination of optional spaces around a slash (like / or / )
• Word Validation: The [A-Z][a-z]* pattern remains unchanged to enforce capitalized first letters followed by lowercase letters (or just a single capitalized letter for short words like "A" or "I").

Valid Test Cases #

These will all pass the regex:

• Jet Black (original space-separated format)
• Jet/Black (direct slash separation)
• Jet / Black (slash with surrounding spaces)
• Hello/World Foo Bar (mixed separators, as long as total length ≤50)
• Z (single capitalized letter, length 1)

Invalid Test Cases #

These will fail (as expected):

• jet Black (first word starts with lowercase)
• Jet black (second word starts with lowercase)
• Jet//Black (multiple consecutive slashes)
• A very long string that definitely exceeds the fifty character limit here (over 50 characters)

Optional Strict Mode (If Needed) #

If you want to restrict to only one type of separator (no mixing spaces and slashes), you can use this variation instead:

^(?=.{0,50}$)(?:([A-Z][a-z]* +)*[A-Z][a-z]*|([A-Z][a-z]*(?:\s*/\s*)+)[A-Z][a-z]*)$

This ensures all words are separated either by spaces or by slashes (with optional spaces around them), but not both in the same string.

内容的提问来源于stack exchange，提问作者Aligator3000