[GAP Forum] Problems getting GAP to read my files

[Russ Woodroofe]

Dear Will,
I want to tell you about my front-end and distribution for GAP on the Mac, Gap.app.  See
https://cocoagap.sourceforge.io/
It's listed under GAP's alternative distributions.

In particular, it has a File-Open for .g files (Command-Shift-O).  Also, Command-Option-Shift-O will repeat the last such open, so if you're debugging a program and reloading it over and over again, you can do it with one key shortcut.

There are two ways that Gap.app might help in your specific circumstance.  
1)  I don't see where your read commands are badly formed, but if they somehow are, the File-Open dialog will likely issue them correctly.
2)  If there's an issue with your installation of GAP, then the GAP install included with the Gap.app+GAP download is tested and might work better.

Best,

  --Russ

> On 20 Jun 2020, at 02:44, Will Chen <oxeimon at gmail.com> wrote:
> 
> Dear all,
> 
> I've just installed gap 4.11.0 on a new macbook. Installation seems to gone
> smoothly. However I'm having trouble getting gap to read my files. It can't
> find them.
> 
> The gap folder is at: "/Users/wchen/gap-4.11.0".
> Inside that folder, I put a document which I want it to read called
> "setup.g"
> 
> However, when I enter:
> 
> Read("setup.g");
> 
> I get the error:
> 
> Error, file "setup.g" must exist and be readable at
> /Users/wchen/gap-4.11.0/lib/files.gi:210 called from
> 
> <function "Read string">( <arguments> )
> 
> called from read-eval loop at *stdin*:5
> 
> you can 'quit;' to quit to outer loop, or
> 
> you can 'return;' to continue
> 
> I find this confusing because ".../lib/files.gi" isn't even a folder. It's
> a file. I get the exact same error even if I use the full path
> 
> "Read("Users/wchen/gap-4.11.0/setup.g");"
> 
> or
> 
> Read("/Users/wchen/gap-4.11.0/setup.g");
> 
> I was also not able to find any documentation about this.
> 
> I would very much appreciate some help.
> 
> - Will
> 
> -- 
> 
> William Chen
> NSF Postdoctoral Fellow, Department of Mathematics
> Columbia University,
> New York, NY, 10025
> oxeimon at gmail.com
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