quick ctag option file for unreal shaders

hlsl.ctag

# definitions for hlsl to be used for unreal shaders, usf, ush etc...
--langdef=hlsl
--map-hlsl=+.ush 
--map-hlsl=+.usf

# for now just catch all functions,
# [a-zA-Z2-4]+ should match any type identifier,
# [a-zA-Z_]+ should match the function names,
# \((([a-zA-Z2-4]+[[:space:]]+[a-zA-Z]+)([[:space:]]*[,]*[[:space:]]*))*\) should match any inputs to functions,
# \2 means the second group is the name,
# f means it will be tagged as a function,
# {mgroup=N} is required, this sets jumps us to the first line of the pattern when jumping to tag 
--kinddef-hlsl=f,function,function
--mline-regex-hlsl=/([a-zA-Z2-4]+)[[:space:]]+([a-zA-Z_]+)\((([a-zA-Z2-4]+[[:space:]]+[a-zA-Z_]+)([[:space:]]*[,]*[[:space:]]*))*\)/\2/f/{mgroup=0}
--fields=+ln

Run ctags --languages="hlsl" --options=$HOME/ctags.d/hlsl.ctags -R . in ...\Engine\Shaders to create tags file for all usf and ush files.