The fourth bird questions

The fourth bird answers

• Python regex and leading 0 in capturing group
• REGEX: Extract latitude and longitude from Google Maps URL
• Validate decimal greater than 1 with regex
• First letter of each word in a string and punctuation
• awk to extract a block of text
• greedy backreference in python's reguar expression?
• How to split the string with delimiter and swap the substring's position in bash?
• Filtering text that ends with certain char(all occurrences) in python through regexp
• PHP Get Longest String in Array without loop [duplicate]
• Split returns non-matches [duplicate]