From meissner@lynx.cs.usfca.edu Fri Oct 23 05:12:42 1992 Received: from lynx.cs.usfca.edu by dkuug.dk with SMTP id AA25155 (5.65c8/IDA-1.4.4j for ); Fri, 23 Oct 1992 20:15:31 +0100 Received: by lynx.cs.usfca.edu (AIX 3.2/UCB 5.64/4.03) id AA28989; Fri, 23 Oct 1992 12:12:42 -0700 Date: Fri, 23 Oct 1992 12:12:42 -0700 From: meissner@lynx.cs.usfca.edu (Loren P. Meissner) Message-Id: <9210231912.AA28989@lynx.cs.usfca.edu> To: sc22wg5@dkuug.dk Subject: Varying Strings Cc: meissner@lynx.cs.usfca.edu X-Charset: ASCII X-Char-Esc: 29 I have received the following note addressed to Fortran Forum. It will appear in the next issue (Dec 92). 21 July 1992 K. Brokate Ruebezahlweg 20 D-725 Leonberg Dear Author or Editor: May I send two remarks on "Varying Length Strings": 1. Topic 2.7.2 for "Replace" with Target and "Every" Definition is needed for searching continuation (within copy of String) after a replacement: does the search include the replaced part within the copy? How then stop if infinite replacement occurs? 2. Topics 2.7.1 and 2.7.2: If Start is greater than length, the meaning of append should be clarified: either additional blanks are inserted as needed to guarantee that Start coincides with the resulting start position number of the inserted copy of the substring -- or no such blanks are inserted in any case. I am not competent to decide which way in 1. and in 2. is preferable. In addition, for more doubtfreeness, I might suggest, that in the explanations (and may be in the names) the terms "position" and "position number" should be made visible: "startpos", "endpos", "position number"; also "last" supplemented by "right" if "rightmost" is not advisable). 3. Finally I think of a device to limit the resulting length (during execution) as a warning feature like overflow in floating/fixed pt arithmetic. 4. In addition, I feel uneasy with names index, scan, verify. Perhaps: find string, find char, checkchar ? The length of the name (I think) is not an important issue for these procedures. ------------------END------------------- Loren Meissner.