EOL problem and incompatibility on windows for dev generate command/flag

[KevinGossentCap]

Summary

The 2 commands "sf dev generate command" and "sf dev generate flag" are not EOL compatible on windows platform.
the first one creates the "command" from template with UNIX EOL style and the "flag" readlines based on fs.EOL so windows style.

Steps To Reproduce:

1. Use a windows machine.
2. Initiate a new sfdx plugins with "sf dev generate command"
3. try to add any flag with "sf dev generate flag"
4. see the error

Expected result

Coherent behavior between the two commands.

Actual result

Code error and all additions of "flag" are at the beginning of the command file.

System Information

• Which shell/terminal are you using? (e.g. bash, zsh, powershell 5, powershell 7, cmd.exe, etc.)
  Powershell 7.3.3

• If you are using sfdx

  • Run sfdx version --verbose --json

• If you are using sf

  • Run sf version --verbose --json

• Paste the output here (Happens with both sfdx and sf)
  {
  "cliVersion": "sfdx-cli/7.196.5",
  "architecture": "win32-x64",
  "nodeVersion": "node-v18.15.0",
  "osVersion": "Windows_NT 10.0.19044",
  "shell": "cmd.exe",
  "rootPath": "C:\KGO_Tools\node-v18-win-x64\node_modules\sfdx-cli",
  "pluginVersions": [
  "@copado/copado-cli 1.1.19 (user)",
  "@oclif/plugin-autocomplete 2.1.8 (core)",
  "@oclif/plugin-commands 2.2.13 (core)",
  "@oclif/plugin-help 5.2.9 (core)",
  "@oclif/plugin-not-found 2.3.23 (core)",
  "@oclif/plugin-plugins 2.4.4 (core)",
  "@oclif/plugin-search 0.0.15 (core)",
  "@oclif/plugin-update 3.1.9 (core)",
  "@oclif/plugin-version 1.3.2 (core)",
  "@oclif/plugin-warn-if-update-available 2.0.33 (core)",
  "@oclif/plugin-which 2.2.18 (core)",
  "apex 2.2.10 (core)",
  "auth 2.7.11 (core)",
  "community 2.2.9 (core)",
  "custom-metadata 2.1.11 (core)",
  "data 2.3.9 (core)",
  "deploy-retrieve 1.8.8 (core)",
  "dev 0.7.0 (user)",
  "info 2.6.4 (core)",
  "limits 2.3.12 (core)",
  "org 2.6.5 (core)",
  "packaging 1.16.3 (core)",
  "schema 2.3.6 (core)",
  "settings 1.4.3 (core)",
  "signups 1.4.11 (core)",
  "source 2.9.1 (core)",
  "telemetry 2.1.3 (core)",
  "templates 55.4.5 (core)",
  "trust 2.4.6 (core)",
  "user 2.3.7 (core)",
  "@salesforce/sfdx-diff 0.0.6 (user)",
  "@salesforce/sfdx-plugin-lwc-test 1.0.1 (core)",
  "sfdx-cli 7.196.5 (core)",
  "sfdx-hardis 3.13.0 (user)",
  "sfdx-kgo-plugin 0.0.24 (link) C:\GitRepos\sfdx-kgo-plugin"
  ]
  }
  {
  "cliVersion": "@salesforce/cli/1.73.0",
  "architecture": "win32-x64",
  "nodeVersion": "node-v18.15.0",
  "osVersion": "Windows_NT 10.0.19044",
  "shell": "cmd.exe",
  "rootPath": "C:\KGO_Tools\node-v18-win-x64\node_modules\@salesforce\cli",
  "pluginVersions": [
  "@oclif/plugin-autocomplete 2.1.8 (core)",
  "@oclif/plugin-commands 2.2.13 (core)",
  "@oclif/plugin-help 5.2.9 (core)",
  "@oclif/plugin-not-found 2.3.23 (core)",
  "@oclif/plugin-plugins 2.4.4 (core)",
  "@oclif/plugin-search 0.0.15 (core)",
  "@oclif/plugin-update 3.1.9 (core)",
  "@oclif/plugin-version 1.3.2 (core)",
  "@oclif/plugin-warn-if-update-available 2.0.33 (core)",
  "@oclif/plugin-which 2.2.18 (core)",
  "@salesforce/cli 1.73.0 (core)",
  "apex 2.2.9 (core)",
  "auth 2.7.11 (core)",
  "data 2.3.9 (core)",
  "deploy-retrieve 1.8.8 (core)",
  "dev 0.7.0 (user)",
  "info 2.6.4 (core)",
  "limits 2.3.12 (core)",
  "login 1.2.5 (core)",
  "org 2.6.5 (core)",
  "schema 2.3.6 (core)",
  "settings 1.4.3 (core)",
  "sobject 0.1.14 (core)",
  "source 2.9.1 (core)",
  "telemetry 2.1.3 (core)",
  "templates 55.4.5 (core)",
  "trust 2.4.6 (core)",
  "user 2.3.7 (core)"
  ]
  }

Additional information

Feel free to attach a screenshot.

[github-actions]

Thank you for filing this issue. We appreciate your feedback and will review the issue as soon as possible. Remember, however, that GitHub isn't a mechanism for receiving support under any agreement or SLA. If you require immediate assistance, contact Salesforce Customer Support.

[git2gus]

This issue has been linked to a new work item: W-13012582