New flag bit12 with isoburn_read_iso_head()

libisoburn/burn_wrap.c

@@ -1291,6 +1291,8 @@ int isoburn_read_iso_head_parse(unsigned char *data,
                  0= do not return anything in info (do not even touch it)
                  1= copy volume id to info (info needs 33 bytes)
                  2= copy 64 kB header to info (needs 65536 bytes)
+               bit12= read even if the start of multi-session emulation
+                      yielded a read error
                bit13= do not read head from media but use first 64 kB from info
                bit14= check both half buffers (not only second)
                       return 2 if found in first block
@@ -1333,7 +1335,7 @@ int isoburn_read_iso_head(struct burn_drive *d, int lba,
    if(ret > 0 && to_read >= (off_t) (36 * 1024)) {
      ret= isoburn_find_emulator(&o, d, 0);
      if(ret > 0)
-       if(o->media_read_error)
+       if(o->media_read_error && !(flag & (1 << 12)))
          {ret= (-1 * !!(flag & (1 << 15))); goto ex;}
      if(to_read >= (off_t) (64 * 1024))
        to_read= 64 * 1024;

libisoburn/libisoburn.h

@@ -725,6 +725,9 @@ void isoburn_toc_disc_free(struct isoburn_toc_disc *disc);
                  1= copy volume id to info (info needs 33 bytes)
                  2= @since 0.2.2 :
                     copy 64 kB header to info (needs 65536 bytes) 
+                bit12= @since 1.5.6 :
+                       Read even if the start of multi-session emulation 
+                       yielded a read error
                 bit13= @since 0.2.2:
                        Do not read head from medium but use first 64 kB from
                        info.

xorriso/xorriso_timestamp.h

@@ -1 +1 @@
-#define Xorriso_timestamP "2023.02.08.200727"
+#define Xorriso_timestamP "2023.02.24.080036"