Anjuta Scintilla - Auto Indentation

Binary package hint: anjuta

Start a new project in Anjuta 2.26.0.0 and open the file main.cc. Change the content to something simple like this:
int main() {
 printf("/");
 return 0;
}
Position your cursor after the ; of the printf-line. Press Enter. Indentation is normal, one tab.

Add another / to the print statement. So it should look like this:
int main() {
 printf("//");
 return 0;
}
Position you cursor at the end of the line again and press Enter. Notice that indentation is now using a tab and seven spaces...

PS: I discovered this when making a string like "http://www.whatever.com".