readme: added note about Git diffs

dg · sebastianbergmann · commit 34be1d116d75 · 2023-03-28T17:50:21.000+02:00
https://www.artima.com/weblogs/viewpost.jsp?thread=164293
diff --git a/README.md b/README.md
@@ -202,3 +202,5 @@ The code above yields the output below:
                     )
             )
     )
+
+Note: If the chunk size is 0 lines, i.e., `getStartRange()` or `getEndRange()` return 0, the number of line returned by `getStart()` or `getEnd()` is one lower than one would expect. It is the line number after which the chunk should be inserted or deleted; in all other cases, it gives the first line number of the replaced range of lines.

Original file line number	Diff line number	Diff line change
`@@ -202,3 +202,5 @@ The code above yields the output below:`
`202`	`202`	`)`
`203`	`203`	`)`
`204`	`204`	`)`
	`205`	`+`
	`206`	+Note: If the chunk size is 0 lines, i.e., `getStartRange()` or `getEndRange()` return 0, the number of line returned by `getStart()` or `getEnd()` is one lower than one would expect. It is the line number after which the chunk should be inserted or deleted; in all other cases, it gives the first line number of the replaced range of lines.