Lines of xvfs-core.h from check-in f74a2e47ab that are changed by the sequence of edits moving toward check-in 69e476dcd5:

                         1: #ifndef XVFS_COMMON_H_1B4B28D60EBAA11D5FF85642FA7CA22C29E8E817
                         2: #define XVFS_COMMON_H_1B4B28D60EBAA11D5FF85642FA7CA22C29E8E817 1
                         3: 
                         4: #include <tcl.h>
                         5: 
                         6: #define XVFS_PROTOCOL_VERSION 1
                         7: 
                         8: typedef const char **(*xvfs_proc_getChildren_t)(const char *path, Tcl_WideInt limit);
                         9: typedef const unsigned char *(*xvfs_proc_getData_t)(const char *path, Tcl_WideInt start, Tcl_WideInt length);
                        10: 
f74a2e47ab 2019-05-02   11: int Xvfs_Register(const char *fsName, int protocolVersion, xvfs_proc_getChildren_t getChildrenProc, xvfs_proc_getData_t getData);
                        12: 
                        13: #endif