[perl #127333] add warning for until(assignment)

[perl5.git] / makedepend.SH

diff --git a/makedepend.SH b/makedepend.SH
index 3b8e050..4e203b6 100755 (executable)
--- a/makedepend.SH
+++ b/makedepend.SH
@@ -141,29 +141,40 @@ for file in `$cat .clist`; do
     #          && defined(BAR) /* comment */ \
     #          && defined(BAZ) /* comment */ \
     #               etc.
-    # This code processes these latter situations first; it assumes there is
-    # at most one straightforward comment per continued preprocessor line.  (It
-    # would be easier to handle more general cases if sed had a non-greedy '*'
-    # quantifier; but typically preprocessor directive lines are rather
-    # simple.)  The continuation line is joined, and the process repeated on
-    # the enlarged line as long as there are continuations.  At the end, if
-    # there are any comments remaining, they should be like the first situation,
-    # and can just be deleted.  (Subsequent lines of the comment are irrelevant
-    # and get dropped.)
-    ( $echo "#line 2 \"$file\""; \
-      $sed -n <$file \
-       -e "/^${filebase}_init(/q" \
-        -e ': testcont'               \
-       -e '/^[  ]*#/s|/\*.*\*/||'    \
-        -e '/\\$/{'                   \
-            -e 'N'                    \
-            -e 'b testcont'           \
-        -e '}'                        \
-        -e 's/\\\n/ /g'               \
-       -e '/^#line/d' \
-       -e '/^[  ]*#/{' \
-       -e 's|/\*.*$||' \
-       -e p \
+    # Also, in lines like
+    #      #defined FOO(a,b)    a/**/b
+    # the comment may be important and so needs to be retained.
+    # This code processes the single-line comments first; it assumes there is
+    # at most one straightforward comment per continued preprocessor line,
+    # replacing each non-empty comment (and its surrounding white space) by a
+    # single space.  (sed only has a greedy '*' quantifier, so this doesn't
+    # work right if there are multiple comments per line, and strings can look
+    # like comments to it; both are unlikely in a preprocessor statement.) Any
+    # continuation line is joined, and the process repeated on the enlarged
+    # line as long as there are continuations.  At the end, if there are any
+    # comments remaining, they are either completely empty or are like the
+    # first situation.  The latter are just deleted by first deleting to the
+    # end of line (including preceding white space) things that start with '/*'
+    # and the next char isn't a '*'; then things that start with '/**', but the
+    # next char isn't a '/'.  (Subsequent lines of the comment are irrelevant
+    # and get dropped.)  At the end, we unjoin very long lines to avoid
+    # preprocessor limitations
+    ( $echo "#line 2 \"$file\"";                               \
+      $sed -n <$file                                           \
+       -e "/^${filebase}_init(/q"                             \
+        -e ': tstcont'                                         \
+       -e '/^[         ]*#/s|[         ]*/\*..*\*/[    ]*| |' \
+        -e '/\\$/{'                                            \
+            -e 'N'                                             \
+            -e 'b tstcont'                                     \
+        -e '}'                                                 \
+       -e 's/\\\n//g'                                         \
+       -e '/^#line/d'                                         \
+       -e '/^[         ]*#/{'                                 \
+           -e 's|[     ]*/\*[^*].*$||'                        \
+           -e 's|[     ]*/\*\*[^/].*$||'                      \
+            -e 's/.\{255\}/&\\\n/g'                           \
+           -e p                                               \
        -e '}' ) >UU/$file.c
 
     # We're not sure why this was there; the #endif is extraneous on modern z/OS