Checking patch manual/terminal.texi...
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@code{cfsetibaud} will be unaffected by the call.  @code{CIGNORE} is
useful if you want to set all the software modes in the other members,
but leave the hardware details in @code{c_cflag} unchanged.  (This is
how the @code{TCSASOFT} flag to @code{tcsettattr} works.)

This bit is never set in the structure filled in by @code{tcgetattr}.
@end deftypevr

error: patch failed: manual/terminal.texi:775
error: manual/terminal.texi: patch does not apply