I/O Error on every invocation on Mac

[alecthomas]

Not sure what's going on...

[aat@cavern:~/Projects/kong]termtosvg foo.svg
Recording started, enter "exit" command or Control-D to end
[aat@cavern:~/Projects/kong]ls
README.md            guesswidth.go        kong_test.go         resolver_test.go
_examples/           guesswidth_unix.go   levenshtein.go       scanner.go
build.go             help.go              mapper.go            scanner_test.go
camelcase.go         help_test.go         mapper_test.go       tag.go
context.go           interpolate.go       model.go             tag_test.go
doc.go               interpolate_test.go  model_test.go        tokentype_string.go
error.go             kong.go              options.go
global.go            kong.png             options_test.go
global_test.go       kong.sketch          resolver.go
[aat@cavern:~/Projects/kong]
Traceback (most recent call last):
  File "/usr/local/bin/termtosvg", line 11, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.6/site-packages/termtosvg/__main__.py", line 199, in main
    anim.render_animation(replayed_records, svg_filename, font)
  File "/usr/local/lib/python3.6/site-packages/termtosvg/anim.py", line 213, in render_animation
    for event_record in record_group:
  File "/usr/local/lib/python3.6/site-packages/termtosvg/term.py", line 248, in replay
    for event_record in _group_by_time(records, min_frame_duration, last_frame_duration):
  File "/usr/local/lib/python3.6/site-packages/termtosvg/term.py", line 163, in _group_by_time
    for event_record in event_records:
  File "/usr/local/lib/python3.6/site-packages/termtosvg/term.py", line 53, in record
    for data, time in _record(columns, lines, input_fileno, output_fileno):
  File "/usr/local/lib/python3.6/site-packages/termtosvg/term.py", line 101, in _record
    for data, time in _capture_data(input_fileno, output_fileno, master_fd):
  File "/usr/local/lib/python3.6/site-packages/termtosvg/term.py", line 144, in _capture_data
    n = os.write(write_fileno, data)
OSError: [Errno 5] Input/output error

[ushroo]

Experiencing the same issue on OpenBSD 6.3, Python 3.6.4:

user@tina ~
$ termtosvg --verbose
Logging to /tmp/termtosvg_1bmg2ibl.log
Recording started, enter "exit" command or Control-D to end

user@tina ~
$ echo foo
foo

user@tina ~
$ ^D
Traceback (most recent call last):
  File "./.local/bin/termtosvg", line 11, in <module>
    sys.exit(main())
  File "/home/user/.local/lib/python3.6/site-packages/termtosvg/__main__.py", line 194, in main
    anim.render_animation(replayed_records, svg_filename, font)
  File "/home/user/.local/lib/python3.6/site-packages/termtosvg/anim.py", line 213, in render_animation
    for event_record in record_group:
  File "/home/user/.local/lib/python3.6/site-packages/termtosvg/term.py", line 248, in replay
    for event_record in _group_by_time(records, min_frame_duration, last_frame_duration):
  File "/home/user/.local/lib/python3.6/site-packages/termtosvg/term.py", line 163, in _group_by_time
    for event_record in event_records:
  File "/home/user/.local/lib/python3.6/site-packages/termtosvg/term.py", line 53, in record
    for data, time in _record(columns, lines, input_fileno, output_fileno):
  File "/home/user/.local/lib/python3.6/site-packages/termtosvg/term.py", line 101, in _record
    for data, time in _capture_data(input_fileno, output_fileno, master_fd):
  File "/home/user/.local/lib/python3.6/site-packages/termtosvg/term.py", line 144, in _capture_data
    n = os.write(write_fileno, data)
OSError: [Errno 5] Input/output error

user@tina ~
$ cat /tmp/termtosvg_1bmg2ibl.log
2018-07-08 10:08:04,741 - termtosvg - INFO - Logging to /tmp/termtosvg_1bmg2ibl.log
2018-07-08 10:08:04,741 - termtosvg - INFO - Recording started, enter "exit" command or Control-D to end

user@tina ~
$ ls *.svg /tmp/*.svg
ls: *.svg: No such file or directory
-rw-------  1 user  wheel  -    0B Jul  8 10:08 /tmp/termtosvg_nbbjvjjl.svg

user@tina ~
$ id
uid=1000(user) gid=1000(user) groups=1000(user), 0(wheel), 9(wsrc), 117(dialer)

user@tina ~
$ sysctl kern.version
kern.version=OpenBSD 6.3 (GENERIC.MP) #4: Sun Jun 17 11:22:20 CEST 2018
    root@syspatch-63-amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP

[nbedos]

@ushroo Thanks for reporting the issue. I don't have a machine with MacOS but I do have a machine running OpenBSD 6.2 so I should be able to fix this. :) I did some testing and it seems termtosvg is stuck forever on a select call. For now I have no idea why but I'll investigate in the next few days.

[nbedos]

@ushroo @alecthomas @wwj718 @jseed
I've committed a fix just now: 3a459cc
I've tested it on OpenBSD 6.3 and Mac OS 10.12 so it should fix the problem on both OSes.

I'll make a new release including the fix later this week when I have more time.

[alecthomas]

It works!

Thanks very much.