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.Dd January 14, 2019
.Dt PSFED 1
.Os
.
.Sh NAME
.Nm psfed
.Nd PSF2 font editor
.
.Sh SYNOPSIS
.Nm
.Op Fl H Ar height
.Op Fl g Ar glyphs
.Op Fl h Ar height
.Op Fl w Ar width
.Ar file
.
.Sh DESCRIPTION
.Nm
is a PSF2 font editor
for the Linux framebuffer.
.
.Pp
The arguments are as follows:
.
.Bl -tag -width Ds
.It Fl H Ar height
Modify the height of an existing font.
Only increasing the height is allowed.
.
.It Fl g Ar glyphs
Set the number of glyphs in a new font.
The default number of glyphs is 256.
.
.It Fl h Ar height
Set the height of a new font.
The default height is 16.
.
.It Fl w Ar width
Set the width of a new font.
The default width is 8.
.El
.
.Ss Normal Mode
In normal mode,
each glyph is displayed in a grid.
.
.Pp
.Bl -tag -width Ds -compact
.It Ic q
Quit.
.Nm
will ask for confirmation
if the font has been modified
since the last write.
.
.It Ic w
Write font to
.Ar file .
.
.It Ic - Ic +
Adjust display scale.
.
.It Ic h Ic l
Select previous/next glyph.
.
.It Ic k Ic j
Select glyph in previous/next row.
.
.It Ic f
Select glyph of next input character.
.
.It Ic '
Return to previously selected glyph.
.
.It Ic y
Copy selected glyph.
.
.It Ic e
Edit selected glyph in
.Sx Edit Mode .
.
.It Ic i
Enter
.Sx Preview Mode .
.El
.
.Ss Edit Mode
In edit mode,
the selected glyph is displayed for editing
surrounded by a checked border.
The glyph is also displayed unscaled
in the bottom-right corner.
.
.Pp
.Bl -tag -width Ds -compact
.It Ic ESC
Return to
.Sx Normal Mode .
.
.It Ic - Ic +
Adjust display scale.
.
.It Ic g Ic G
Toggle guide on selected column/row.
.
.It Ic h Ic l
Select previous/next bit in row.
.
.It Ic k Ic j
Select previous/next bit in column.
.
.It Ic SPACE
Flip selected bit.
.
.It Ic r
Invert glyph.
.
.It Ic H Ic L
Move glyph left/right.
.
.It Ic K Ic J
Move glyph up/down.
.
.It Ic p
Paste the copied glyph.
.
.It Ic u
Revert glyph to initial state.
.El
.
.Ss Preview Mode
In preview mode,
arbitrary text may be entered
for preview.
Press
.Ic ESC
to return to
.Sx Normal Mode .
.
.Sh ENVIRONMENT
.Bl -tag -width FRAMEBUFFER
.It Ev FRAMEBUFFER
The framebuffer device path.
The default path is
.Pa /dev/fb0 .
.El
.
.Sh SEE ALSO
.Xr psfaddtable 1 ,
.Xr psfgettable 1 ,
.Xr psfstriptable 1 ,
.Xr setfont 8
.
.Sh CAVEATS
.Nm
does not support Unicode tables.
Use
.Xr psfaddtable 1
to add Unicode tables
to fonts created by
.Nm .
.
.Sh BUGS
.Nm
makes no attempt to convert header fields
to and from little-endian format.
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