Regex improvements

[vincentarelbundock]

Consolidated list of potential regex improvement.

Germany

• Germany East
• Germany West
• East Germany
• West Germany

Ireland and Northern Ireland

test <- c("Ireland", "Northern Ireland", "North Ireland", "N Ireland", "N. Ireland", 
          "Ireland (Northern)", "Ireland (North)", "Ireland (N)", "Ireland (N.)",
          "Ireland, Northern", "Ireland, North", "Ireland, N.", "Ireland, N", 
          "in the north of Ireland")

German regex improvements needed

• «Sint Maarten»
• «Aruba»
• «Curaçao»

Relevant older threads

• Regex: simplification #197