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| <a name="Slightly-Looser-Rules-for-Escaped-Newlines"></a> |
| <h3 class="section">6.21 Slightly Looser Rules for Escaped Newlines</h3> |
| <a name="index-escaped-newlines"></a> |
| <a name="index-newlines-_0028escaped_0029"></a> |
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| <p>Recently, the preprocessor has relaxed its treatment of escaped |
| newlines. Previously, the newline had to immediately follow a |
| backslash. The current implementation allows whitespace in the form |
| of spaces, horizontal and vertical tabs, and form feeds between the |
| backslash and the subsequent newline. The preprocessor issues a |
| warning, but treats it as a valid escaped newline and combines the two |
| lines to form a single logical line. This works within comments and |
| tokens, as well as between tokens. Comments are <em>not</em> treated as |
| whitespace for the purposes of this relaxation, since they have not |
| yet been replaced with spaces. |
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