gap-system
Modify the GAP banner to show a rendition of the logo
First iteration -- based on the sketches in https://github.com/gap-system/gap-logo/blob/main/gap-logo-ascii.txt but using a "rotated" / "flipped" version of the logo in anticipation of us changing the logo orientation (clearly we could also flip it back).
I am sure this could be improved. Perhaps e.g. @mtorpey would be interested in that ;-).
Here is a "preview" of the current state:
$ ./gap
. - O
/ / \ GAP 4.16dev-15-g0b145d9-dirty built on 2025-09-23 13:50:33+0200
O---O | Architecture: aarch64-apple-darwin24-default64-kv10
\ \ / Web: https://www.gap-system.org
` - O
Configuration: gmp 6.3.0, GASMAN, readline
Loading the library and packages ...
Packages: AClib 1.3.3, Alnuth 3.2.1, AtlasRep 2.1.9, AutoDoc 2025.05.09,
AutPGrp 1.11.1, Browse 1.8.21, CaratInterface 2.3.7, CRISP 1.4.8,
Cryst 4.1.29, CrystCat 1.1.10, CTblLib 1.3.11,
curlInterface 2.4.2, FactInt 1.6.3, FGA 1.5.0, Forms 1.2.13,
GAPDoc 1.6.7, genss 1.6.9, IO 4.9.3, IRREDSOL 1.4.4,
LAGUNA 3.9.7, orb 5.0.1, PackageManager 1.6.3, Polenta 1.3.11,
Polycyclic 2.17, PrimGrp 4.0.0, RadiRoot 2.9, recog 1.4.4,
ResClasses 4.7.3, SmallGrp 1.5.4, Sophus 1.27, SpinSym 1.5.2,
StandardFF 1.0, TomLib 1.2.11, TransGrp 3.6.5, utils 0.91
Try '??help' for help. See also '?copyright', '?cite' and '?authors'
gap>
Delightful! As you hinted, I've tried a few different things myself, and the best I could come up with was:
● G GAP 4.15dev-74-g0a4774e built on 2025-02-06 12:48:35+0000
● ● A https://www.gap-system.org
● P Architecture: x86_64-pc-linux-gnu-default64-kv10
Configuration: gmp 6.3.0, GASMAN, readline
Loading the library and packages ...
Packages: curlInterface 2.4.0, GAPDoc 1.6.7, IO 4.9.1, PackageManager 1.6.3, PrimGrp 3.4.4, SmallGrp 1.5.4, TransGrp 3.6.5
Try '??help' for help. See also '?copyright', '?cite' and '?authors'
after struggling with getting the lines down. I'd certainly be in favour of the current pull request.
As a bit of a side note, it occurs to me we could introduce colour using the old 033 codes. I did this for my first attempt, and it looked alright:
but there's a problem, which is that the line wrapping is based on the number of characters before colours are rendered, so in narrow windows it's weirdly cut off:
I tried looking into the line wrapping logic myself, but it was a bit beyond me. I just thought I'd mention it in case anyone had any expertise that might allow colour to be added to the ascii logo somehow.
EDIT: The above style is achieved by:
diff --git a/lib/init.g b/lib/init.g
index c99553b23..049606145 100644
--- a/lib/init.g
+++ b/lib/init.g
@@ -434,7 +434,7 @@ function( prefix, values, suffix )
end);
BindGlobal( "ShowKernelInformation", function()
- local sysdate, btop, vert, bbot, config, str, gap;
+ local sysdate, btop, vert, bmid, bbot, config, str, gap;
if GAPInfo.Date <> "today" then
sysdate := " of ";
@@ -447,19 +447,25 @@ BindGlobal( "ShowKernelInformation", function()
fi;
if GAPInfo.TermEncoding = "UTF-8" then
- btop := "┌───────┐\c"; vert := "│"; bbot := "└───────┘\c";
+ #btop := "┌───────┐\c"; vert := "│"; bbot := "└───────┘\c";
+ btop := " \033[94m●\033[0m \033[1;31mG\033[0m";
+ bmid := "\033[92m●\033[0m \033[91m●\033[0m \033[1;31mA\033[0m";
+ bbot := " \033[93m●\033[0m \033[1;31mP\033[0m";
else
- btop := "*********"; vert := "*"; bbot := btop;
+ btop := "*********";
+ vert := "*";
+ bmid := "* GAP *";
+ bbot := btop;
fi;
if IsHPCGAP then
gap := "HPC-GAP";
else
gap := "GAP";
fi;
- Print( " ",btop," ",gap," ", GAPInfo.BuildVersion,
+ Print( " ",btop," ",gap," ", GAPInfo.BuildVersion,
sysdate, "\n",
- " ",vert," GAP ",vert," https://www.gap-system.org\n",
- " ",bbot," Architecture: ", GAPInfo.Architecture, "\n" );
+ " ",bmid," https://www.gap-system.org\n",
+ " ",bbot," Architecture: ", GAPInfo.Architecture, "\n" );
if IsHPCGAP then
Print( " Maximum concurrent threads: ",
GAPInfo.KernelInfo.NUM_CPUS, "\n");
if anyone wants to try debugging it.
I like this one:
best. I'm sorry to say that the ascii art version look strictly worse than the current banner in my eyes (sorry!)
If we're still at the brainstorming stage, I could mention that we have a lot more of unicode at our disposal, which could improve things. Looking at Max's design above, we can use box-drawing characters and geometric shapes to smarten it up:
. - O
/ / \ GAP 4.16dev-15-g0b145d9-dirty built on 2025-09-23 13:50:33+0200
O---O | Architecture: aarch64-apple-darwin24-default64-kv10
\ \ / Web: https://www.gap-system.org
` - O
.───●. G
╱ ╱ ╲ GAP 4.16dev-15-g0b145d9-dirty built on 2025-09-23 13:50:33+0200
●───● ) A Architecture: aarch64-apple-darwin24-default64-kv10
╲ ╲ ╱ Web: https://www.gap-system.org
`───●' P
(I've also incorporated the vertical "G A P" letters, which look good in the real logo.)
Then again, there's something more playful and fun about pure ascii which is lost here. :)
Note that the current logo uses box-drawing characters, and ascii-only displays have a fallback:
┌───────┐ GAP 4.15dev-74-g0a4774e built on 2025-02-06 12:48:35+0000
│ GAP │ https://www.gap-system.org
└───────┘ Architecture: x86_64-pc-linux-gnu-default64-kv10
********* GAP 4.15dev-74-g0a4774e built on 2025-02-06 12:48:35+0000
* GAP * https://www.gap-system.org
********* Architecture: x86_64-pc-linux-gnu-default64-kv10
and we could have a similar approach.
I like this one:
best. I'm sorry to say that the ascii art version look strictly worse than the current banner in my eyes (sorry!)
I agree with James's comment. Good work though, everyone contributing! I certainly have no relevant skills in this area to contribute towards the effort.
I do like @mtorpey version as well, although the black&white version less so.
@mtorpey could you also provide a render of a pure ASCII version, say with * for dots? Once in B&W and once in color?
We are also considering to flip/rotate the logo, like here https://github.com/gap-system/gap-logo/tree/mh/rotated-60?tab=readme-ov-file#preview so you could also do that
UTF-8, b&w
UTF-8, colour
ASCII, b&w
ASCII, colour
I can make a pull request if that'd be helpful.
P.S. Code is at https://github.com/mtorpey/gap/commit/dba5b2318e92a281c8eadbac0efa4e0d1f76a94a
This version is amazing! <3 @mtorpey love this ASCII.
.───●.
╱ ╱ ╲ GAP 4.16dev-15-g0b145d9-dirty built on 2025-09-23 13:50:33+0200
●───● ) Architecture: aarch64-apple-darwin24-default64-kv10
╲ ╲ ╱ Web: https://www.gap-system.org
`───●'
