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Re: [Groff] MM's nested lists: AL inside BVL
From: |
Ted Harding |
Subject: |
Re: [Groff] MM's nested lists: AL inside BVL |
Date: |
Tue, 29 Jun 2010 16:44:19 +0100 (BST) |
On 28-Jun-10 15:20:49, Anton Shepelev wrote:
> Ted Harding:
>> That -- the asymmetry -- is also my feeling
>> exactly! However, I think the increment/decrement
>> operation is best left alone! Consider:
>
> So you show a way to make Groff do what you want it
> to do, but my mind either inattentive or lazy and
> therefore prone to human mistakes, which makes me
> incline to "Safe" programming languages (Pascal in
> preference to C, for example). So I might even write
> some "Safe" macros if I found myself bumping too
> often into this kind of error:
>
> \" Common wrapper for safe assign, increment
> \" and decrement operations, not to be used
> \" directly.
> .de cAS
> . nr \\$1 \\$2(\\$3)
> ..
> \" Safe assign
> .de NR
> . cAS \\$1 "" \\$2
> ..
> .
> .\" Decrement register $1 by value $2
> .de DR
> . cAS \\$1 - \\$2
> .
> .\" Increment register $1 by value $2
> ..
> .de IR
> . cAS \\$1 + \\$2
> ..
>
> But where to stop? I might end up with a wrapper
> around groff...
>
>> and, later: "When interpolated, a number register
>> is converted into decimal (default), decimal with
>> leading zeros, lower-case Roman, upper-case Roman,
>> lower- case sequential alphabetic, or upper-case
>> sequential alphabetic, according to the format
>> specified by 'af'."
>
> I too thought about .af when saw it in Tadziu's
> example. My idea was to introduce a format that
> would expand into a value in parentheses, but it
> would be adding another dimenstion to formats, not
> just another format, which is wrong.
>
>> And, while you're at it, you might as well always
>> bracket it since the "+" prefix will still work as
>> before with the brackets,...
>
> So all one needs to be happy is just to be aware of
> the feature and do some extra writing to take it
> into account.
>
> Anton
Exactly!
Ted.
--------------------------------------------------------------------
E-Mail: (Ted Harding) <address@hidden>
Fax-to-email: +44 (0)870 094 0861
Date: 29-Jun-10 Time: 16:44:15
------------------------------ XFMail ------------------------------
- Re: [Groff] MM's nested lists: AL inside BVL, (continued)
- Re: [Groff] MM's nested lists: AL inside BVL, Tadziu Hoffmann, 2010/06/24
- Re: [Groff] MM's nested lists: AL inside BVL, Werner LEMBERG, 2010/06/24
- Re: [Groff] MM's nested lists: AL inside BVL, Anton Shepelev, 2010/06/24
- Re: [Groff] MM's nested lists: AL inside BVL, Werner LEMBERG, 2010/06/24
- Re: [Groff] MM's nested lists: AL inside BVL, Ted Harding, 2010/06/24
- Re: [Groff] MM's nested lists: AL inside BVL, Tadziu Hoffmann, 2010/06/27
- Re: [Groff] MM's nested lists: AL inside BVL, Ted Harding, 2010/06/27
- Re: [Groff] MM's nested lists: AL inside BVL, Anton Shepelev, 2010/06/27
- Re: [Groff] MM's nested lists: AL inside BVL, Ted Harding, 2010/06/27
- Re: [Groff] MM's nested lists: AL inside BVL, Anton Shepelev, 2010/06/28
- Re: [Groff] MM's nested lists: AL inside BVL,
Ted Harding <=