&bstat(4)

NAME

&bstat - Retrieve current buffer statistic

&bstat <stat>

&bstat returns the specified <stat> on the current buffer. Valid <stat> values are:

Returns a non-zero value if the buffer is out of date (i.e. the original file has changed and is newer than the buffer.

The following example uses &bstat to determine if the buffer is out of date and write a simple message:

!if &bstat o 
  ml-write "Buffer out of date" 
!endif