handle {n,} repetition without blowing up codesize

test.sh

@@ -123,6 +123,7 @@ aaaaa(aa)aa(aa(a)a)?aa
 (\\\\$\\\\([a-zA-Z0-9_]+\\\\))|(([A-Za-z_%.]+):)
 .{5}
 .{10,15}
+(a(abc)+){3,}
 "
 input="\
 abcdef
@@ -247,6 +248,7 @@ https://kyryl.tk/404
 OBJ = \$(SRC:.c=.o)
 рврыр
 рврырdhsjhh
+aabcabcaabcaabc
 "
 expect="\
 (0,3)
@@ -371,6 +373,7 @@ expect="\
 (8,12)(?,?)(8,12)(8,11)
 (0,10)
 (0,16)
+(0,15)(11,15)(12,15)
 (0,0)
 "