Only display a warning if backslash is followed by a letter

gap-system · May 13, 2016 · 72ec6bb · 72ec6bb
1 parent f1aedb3
commit 72ec6bb
Show file tree

Hide file tree

Showing 2 changed files with 5 additions and 4 deletions.
diff --git a/doc/ref/string.xml b/doc/ref/string.xml
@@ -249,8 +249,8 @@ starting with a backslash results in an error.
 <Index>escaping non-special characters</Index>
 other</Mark>
 <Item>
-    For any other character the backslash is ignored and a warning is
-    displayed.
+  For any other character the backslash is ignored. If the character
+  is a letter, that is one of <C>a..zA..Z</C>, then a warning is displayed.
 </Item>
 </List>
 <P/>

diff --git a/src/scanner.c b/src/scanner.c
@@ -1875,8 +1875,9 @@ Char GetEscapedChar( void )
     GET_CHAR();
     c += GetOctalDigits();
   } else {
-    SyntaxWarning("Expecting valid escape sequence after \\");
-    c = *TLS(In);
+      if (IsAlpha(*TLS(In))) 
+          SyntaxWarning("Alphabet letter after \\");
+      c = *TLS(In);
   }
   return c;
 }