Dear mkgmap developers, I was developing some string substitution rules in the lines file and we use non-ASCII characters in certain street names prefixes, then I have the following rule: highway=* & name ~ '(?i)pra[cçÇ]a\s+.*' { add streettype:movedend='${name|subst:(?i)pra[cçÇ]a\s+~>}, Pc.'} # Which does not work because mkgmap is using a character decoding to read the style files that is messing with my regexes. I had configured my text editor to save the files in UTF-8 and Latin-1 (ISO-8859-1) for no avail. I ended up in Unicode escaping the accented characters to make them work: highway=* & name ~ '(?i)pra[c\u00E7\u00C7]a\s+.*' { add streettype:movedend='${name|subst:(?i)pra[c\u00E7\u00C7]a\s+~>}, Pc.'} # My suggestion is to make mkgmap read the style files using some broader character decoding (eg.: UTF-8). A side note: the (?u) modifier is not working. This enables Unicode case. Without this I must expand, say "ç" into a character class [cCçÇ]. The (?iu) modifier would cause "ç" to match "c", "C", "ç" and "Ç", for example. This applies to the dozens of other accented characters found throughout the world. And given the multitude of street name prefixes (Brazil, my country, has 50+), this results in quite large and complex style files. This is low priority. I can get along with Unicode escaping but this turns the rules more difficult to read and to maintain. Good job in your latest stable release! Paulo