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Paul Eggert authored
Fix some related minor problems involving "//", vfork. * callproc.c (encode_current_directory): New function. (call_process): Don't append "/"; not needed. * fileio.c (file_name_as_directory_slop): New constant. (file_name_as_directory): Allow SRC to be longer than SRCLEN; this can save the caller having to alloca. (Ffile_name_as_directory, Fdirectory_file_name, Fexpand_file_name): Use SAFE_ALLOCA, not alloca. (directory_file_name, Fexpand_file_name): Leave leading "//" alone, since it can be special even on POSIX platforms. * callproc.c (call_process): * process.c (Fformat_network_address): * sysdep.c (sys_subshell): Use encode_current_directory rather than rolling our own. (create_process): No need to encode directory; caller does that now. * process.h (encode_current_directory): New decl. * sysdep.c (sys_subshell): Work even if vfork trashes saved_handlers. Rework to avoid 'goto xyzzy;'.
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