CWG2908 Counting physical source lines for __LINE__

Author: burblebee

source/preprocessor.tex

@@ -1600,7 +1600,9 @@
 \pnum
 The
 \defn{line number}
-of the current source line is one greater than
+of the current source line is
+the line number of the current physical source line,
+i.e., it is one greater than
 the number of new-line characters read or introduced
 in translation phase 1\iref{lex.phases}
 while processing the source file to the current token.