Hi Valdis,
Actually, could use that now, I've been using a git tree copy for quite some
time now... :)
Good show.
man mh-format says:
When a function or component escape is interpreted and the result will
be printed immediately, an optional field width can be specified to
print the field in exactly a given number of characters. For example,
a numeric escape like %4(size) will print at most 4 digits of the mes?
sage size; overflow will be indicated by a `?' in the first position
(like `?234'). A string escape like %4(me) will print the first 4
characters and truncate at the end. Short fields are padded at the
right with the fill character (normally, a blank).
That's an ugly rendering. With the man(1) here, a environment variable of
`MANOPT=--nh --nj' gives much nicer results.
We don't mention that negative values left-pad.
Enough with your cans of worms! If negative width were really
supported...
$ for w in -9 -3 0 3 9; do
> fmttest -raw -format _%$w'(comp{text})_' 31415
> done
_ 31415_
_314_
_31415_
_314_
_31415 _
$
Seems fine.
$ for w in -9 -3 0 3 9; do
> fmttest -raw -format _%$w'(compval{text})_' 31415
> done
__
__
_31415_
_?415_
_ 31415_
$
I wouldn't expect the first two to be missing. Am I doing something
wrong? And then the fourth shows overflow, good, but uses four, not
three, characters to do it.
$ for w in -9 -3 0 3 9; do
> fmttest -raw -format '%(void(compval{text}))_%'$w'(minus 0)_' 1718
> done
__
__
_-1718_
_?718_
_ -1718_
$
Same for a negative number. (Try passing -1718 to fmttest.)
--
Cheers, Ralph.
https://plus.google.com/+RalphCorderoy
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