how to maintain horizontal viewport

Hello. I often use keyboard shortcut 'z'+<right> to move the viewport to +1
position, that is, hide the first character of each line. However, whenever
I move to an empty line, the viewport reset to +0 position - a reasonable
behaviour to make sure the cursor displayed. Is there a way to fix the
vieweport to +1 always?

A weird question isn't it? You may ask why such need? Here is the story:

I work on a 1280x800 console, with 8-pixel-wide font it is exactly
160 columns, just enough to hold two 80-column source file
side-by-side. I am confort to work with vertical split of two,
usually one side the source code being called, the other side where
it is called from. My conding convention requires 80-columns per
line.

The problem is that the vertical split bar (fillchars=vert:|) takes
one column off, that is, 80-columns and 79-columns I have - there is
no way to remove vertical split bar, even I don't need it (the
indent being a clear visual cue). The code is tight, won't make do
with 79-columns.

The workaround is to set nowrap, and use 'z'+<right> to move the
viewport - which hides away the 1st character of each line. In each
file there is only one non-space character as the 1st in line: 'c',
and it is never edited, as in:

class ClassName(...) # 'c' is the only character ever on 1st column
content_of_the_class ....

The workaround doesn't work with the lines that has zero characters:
empty lines, in which case the cursor stops on the 1st position, and
thus cancelling previous 'z'+<right> keyboard command.

Alternative solution is to try 7-pixel wide font, and I tried a
while: it is hard to eyes.

Thanks!

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