Marlin longFilename support for M23

It appears Marlin supports SD long file names when using an LCD and click encoder. However, if it receives a longFilename in a M23 command (M23 longfilename.gcode) it doesn't make the association with the 8.3 filename, and therefore no file is selected.

If anyone has any ideas about whether it would be possible to have Marlin select the file associated with a longFilename seen in an M23 command, your thoughts would be appreciated.

I have very little coding experience so please be gentle with me.

Thanks in advance for any comments.

Recently i got the same problem,did you get a solution?

To get SD card to read file names longer than 8 char, go to SDFatConfig.h and in the 74th line:

#define SPI_SD_INIT_RATE 5
Change 5 for 6 like so:
#define SPI_SD_INIT_RATE 6