Configuration generated with inconsistent and non-OS compliant line endings

[xelxebar]

Overview

Running under Linux (and potentially Windows as well), when Link creates a .linkconfig file, MacOS line endings (⎕UCS 13) are used, which causes spurious interaction with other Linux tools, e.g.

$ cat ws/.linkconfig
} },watch: "dir",ID: "4.0.17"},

In fact, however, the final byte is `⎕UCS 10`.

Link does respects ⎕UCS 10 line endings just fine at read time, so it might be desirable to also use OS-specific line endings at generation as well.

Reproduction

      ]LINK.Create # nonexistent -watch=dir
Linked: # ← /home/x/devel/com.wilsonb.git/scratchpad/bmp/nonexistent [directory was created]

      ⎕UCS d←⎕NREAD('nonexistent/.linkconfig'⎕NTIE 0) 83 ¯1
{
  LinkVersion: { ID: "4.0.17"},

  Settings: {
    watch: "dir",
  },
}

      10 13⍳d
2 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 2 2 2 2 1 2 0

Note also the trailing ⎕UCS 10 byte.

Version Information

      ]version
 Dyalog  19.0.50027 64-bit Unicode, BuildID 3dae0625
 OS      Linux 6.13.12 #1 SMP PREEMPT_DYNAMIC 1 x86_64
 Link    4.0.17
 SALT    2.915
 UCMD    2.6
 .NET    .NET 8.0.8
 WS      19.0
 Tatin   (unavailable)
 Cider   (unavailable)