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September 2, 2018 at 1:11 pm #3928
Okay…. 20 questions and no answers so far. I don’t know if these are bugs or just me not understanding the limitations of this app.
I have known ANSI escape sequences and I load a test file that contains them. This is what I find and it leaves me puzzled, thus the 20 questions.
There is no Normal color… ALL is apparently Bold text.
ANSI ESCAPE sequences: (I’ll use ESC for the escape character and place spaces for readability only. They are not part of the definition for the escape sequences. the escape sequence ends with m, and other than ESC and the spaces, the rest is the literal ASCII character used in the escape sequence.)
ESC [ 1 m bold On
ESC [ 21 m bold off
These should work fine in .NET, C++, C#, and even in VB, but do not. We’re stuck in perpetual Bold Mode with no other options. A Bold or normal Font isn’t needed to implement this
ESC [ 2 m Dim or “feint” On
ESC [ 22 m Dim or “feint” off
These I don’t expect to work except maybe if it was a VT100 terminal receiving them. Not surprised it doesn’t work.
ESC [ 3 m Italics On
ESC [ 23 m Italics off
These I don’t expect to work except maybe if it was a VT100 terminal receiving them. Not surprised it doesn’t work. Only way to really do it is to mess with the fonts.
ESC [ 4 m Underscore/underline On
ESC [ 24 m Underscore/underline off
These I don’t expect to work except maybe if it was a VT100 terminal receiving them or a hardware screen and not a window. Only way to really do it is to mess with the fonts.
ESC [ 5 m blink On
ESC [ 25 m blink off
This works…. It takes a trick usually in writing the code to do it as a window normally doesn’t support it
ESC [ 6 m fast blink On
ESC [ 26 m fast blink off
This doesn’t work, but I don’t expect it to as its rarely implemented, and it’s only a faster blink rate than normal blink rate. Not surprised it doesn’t work.
ESC [ 7 m Reverse/Inverse Text On
ESC [ 27 m Reverse/Inverse Test off
There is no reason this shouldn’t work. It just flips the background and foreground colors until turned off.
ESC [ 8 m Hidden Text On
ESC [ 28 m Hidden Text off
This is another one that is easily implemented. Just turn the foreground color into the background color until turned off.
ESC [ 9 m Strikeout/strikethrough On
ESC [ 29 m Strikeout/strikethrough off
A window doesn’t support this without messing with the fonts… most hardware doesn’t either. Not surprised it doesn’t work.
it doesn’t support extended ANSI color codes… not even for the base color. (The extended codes basically give a single color code that also states that it is a bold color and not a normal color… for background and foreground…. allowing 16 colors in both)
Now, is this app just for ANSI art? (if so it limits the palette unless I’m missing something) or is it supposed to be more generic and allow people to create (telnet) BBS screens?