etags (GNU Emacs 21.4.20): identifier omitted situation in TAGS (minor bug)

[Steffen DETTMER]

Hi,

I think I found a bug in etags (GNU Emacs 21.4.20), at least on
cygwin happening in a special combination (see below). Finally I
found a small file to reproduce it.

It may happen that a "blank space identifier" is written
instead of the element name. It seems to happen for the last
element of an enum, if additionally a multi-line comment is given
behind and if there is no whitespace between element identifier
and comment block (it seems, all of those conditions must be meet
to trigger the problem).

Here an example (etagsbug.h):

------------------------------------------------------------------->8=======
typedef enum
{
   ELEM_1, /**< Comment Element 1
                Second comment line. */
   ELEM_2, /**< Comment Element 2
                Second comment line. */
   ELEM_I  /**< Comment Element i
                Second comment line. */
} Works_t;

typedef enum
{
   ELEM_1, /**< Comment Element 1
                Second comment line. */
   ELEM_2, /**< Comment Element 2
                Second comment line. */
   ELEM_I/**< Comment Element i
              Second comment line. */
} Fails_t;
=======8<-------------------------------------------------------------------

I would expect the "same" for Works_t and Fails_t, because the
declarations differ in comments/whitespace only, however, ELEM_I
of Fails_t does not go into the created TAGS file.

The resulting TAGS file is something like

------------------------------------------------------------------->8=======
^L
etagsbug.h,154
   ELEM_1,^?3,15
   ELEM_2,^?5,89
   ELEM_I ^?7,163
} Works_t;^?Works_t^A9,237
   ELEM_1,^?13,264
   ELEM_2,^?15,338
          ^?18,444
} Fails_t;^?Fails_t^A19,482
=======8<-------------------------------------------------------------------
(^L, ^? and ^A are one-character control chars in the file of course)

In line 9, there should be "   ELEM_I ^?18,444". With vim 7.0
(1-122) this leads to a parse error (I don't know for Emacs, but
at least the identifier will be missing).

I hope this little description helps a bit.

well, thanks for reading this! :) Best greetings from Germany! :)

oki,

Steffen
 
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About Ingenico Throughout the world businesses rely on Ingenico for secure and 
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technology, established standards and unparalleled ergonomics to provide 
optimal reliability, versatility and usability. This comprehensive range of 
products is complemented by a global array of services and partnerships, 
enabling businesses in a number of vertical sectors to accept transactions 
anywhere their business takes them.
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About Ingenico Throughout the world businesses rely on Ingenico for secure and 
expedient electronic transaction acceptance. Ingenico products leverage proven 
technology, established standards and unparalleled ergonomics to provide 
optimal reliability, versatility and usability. This comprehensive range of 
products is complemented by a global array of services and partnerships, 
enabling businesses in a number of vertical sectors to accept transactions 
anywhere their business takes them.
www.ingenico.com This message may contain confidential and/or privileged 
information. If you are not the addressee or authorized to receive this for the 
addressee, you must not use, copy, disclose or take any action based on this 
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