starred/terminal
1
0
Fork 0
mirror of https://github.com/microsoft/terminal.git synced 2026-02-04 05:35:20 +00:00
Code Issues 19.0k Packages Projects Releases 20 Wiki Activity

fragment extension doc inadequately describes profile UUID generation #14168

New Issue
Open
opened 2026-01-31 04:02:50 +00:00 by claunia · 0 comments
claunia commented 2026-01-31 04:02:50 +00:00
Owner
Copy Link

Originally created by @jeremyd2019 on GitHub (Jun 9, 2021).

In https://docs.microsoft.com/en-us/windows/terminal/json-fragment-extensions#how-to-determine-the-guid-of-an-existing-profile, it says:

To determine the GUID of the profile to be updated, use a Version 5 UUID generator with the following namespace GUID and name:

  • The namespace GUID: {2BDE4A90-D05F-401C-9492-E40884EAD1D8}
  • The name of the profile to be updated

As a sanity check, a profile called 'Ubuntu' will get the generated GUID: {2C4DE342-38B7-51CF-B940-2309A097F518}

If you go online and search for "version 5 UUID generator", you will find several webpages. None of these result in the {2C4DE342... UUID for "Ubuntu".

More research revealed #870 which says:

Canonical Form: Name of profile encoded in BOM-less UTF-8 BOM-less UTF-16LE

That's an apparently important piece of information that was missing from the fragment doc. OK, so we'll probably need some custom code after all

import uuid
uuid.uuid5(uuid.UUID("{2BDE4A90-D05F-401C-9492-E40884EAD1D8}"), "Ubuntu".encode("UTF-16LE"))

This works for python2 (but who uses that anymore?), but on python3 this gives

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Python38\lib\uuid.py", line 787, in uuid5
    hash = sha1(namespace.bytes + bytes(name, "utf-8")).digest()
TypeError: encoding without a string argument

It seems that even Python hard-codes the fact that the name should be utf-8 encoded! Let's try a hack

import uuid
uuid.uuid5(uuid.UUID("{2BDE4A90-D05F-401C-9492-E40884EAD1D8}"), "Ubuntu".encode("UTF-16LE").decode("ASCII"))

That gives the expected answer.

So, to summarize, it seems like that doc should make it more clear that something unusual is going on in the UUID generation, rather than saying "just grab your nearest v5 UUID generator and plug these strings in".

Originally created by @jeremyd2019 on GitHub (Jun 9, 2021). <!-- Briefly describe which document needs to be corrected and why. --> In https://docs.microsoft.com/en-us/windows/terminal/json-fragment-extensions#how-to-determine-the-guid-of-an-existing-profile, it says: > To determine the GUID of the profile to be updated, use a Version 5 UUID generator with the following namespace GUID and name: > > * The namespace GUID: {2BDE4A90-D05F-401C-9492-E40884EAD1D8} > * The name of the profile to be updated > > As a sanity check, a profile called 'Ubuntu' will get the generated GUID: {2C4DE342-38B7-51CF-B940-2309A097F518} If you go online and search for "version 5 UUID generator", you will find several webpages. None of these result in the `{2C4DE342`... UUID for "Ubuntu". More research revealed #870 which says: > Canonical Form: Name of profile encoded in ~~BOM-less UTF-8~~ BOM-less UTF-16LE That's an apparently important piece of information that was missing from the fragment doc. OK, so we'll probably need some custom code after all ```python import uuid uuid.uuid5(uuid.UUID("{2BDE4A90-D05F-401C-9492-E40884EAD1D8}"), "Ubuntu".encode("UTF-16LE")) ``` This works for python2 (but who uses *that* anymore?), but on python3 this gives ``` Traceback (most recent call last): File "<stdin>", line 1, in <module> File "C:\Python38\lib\uuid.py", line 787, in uuid5 hash = sha1(namespace.bytes + bytes(name, "utf-8")).digest() TypeError: encoding without a string argument ``` It seems that even Python *hard-codes* the fact that the name should be utf-8 encoded! Let's try a hack ```python import uuid uuid.uuid5(uuid.UUID("{2BDE4A90-D05F-401C-9492-E40884EAD1D8}"), "Ubuntu".encode("UTF-16LE").decode("ASCII")) ``` That gives the expected answer. So, to summarize, it seems like that doc should make it more clear that something unusual is going on in the UUID generation, rather than saying "just grab your nearest v5 UUID generator and plug these strings in".
Sign in to join this conversation.
No Branch/Tag Specified
Branches Tags
Labels
Clear labels
⛺ Reserved
A11yCO
A11yMAS
A11ySev1
A11ySev2
A11ySev3
A11yTTValidated
A11yUsable
A11yVoiceAccess
A11yWCAG
Area-Accessibility
Area-AtlasEngine
Area-AzureShell
Area-Build
Area-Build
Area-Chat
Area-CmdPal
Area-CodeHealth
Area-Commandline
Area-CookedRead
Area-DefApp
Area-Extensibility
Area-Fonts
Area-GroupPolicy
Area-i18n
Area-Input
Area-Interaction
Area-Interop
Area-Localization
Area-Output
Area-Performance
Area-Portable
Area-Quality
Area-Remoting
Area-Rendering
Area-Schema
Area-Server
Area-Settings
Area-SettingsUI
Area-ShellExtension
Area-ShellExtension
Area-ShellExtension
Area-Suggestions
Area-Suggestions
Area-TerminalConnection
Area-TerminalControl
Area-Theming
Area-UserInterface
Area-VT
Area-Windowing
Area-WPFControl
AutoMerge
Blocking-Ingestion
Culprit-Centennial
Culprit-WinUI
Disability-All
Disability-Blind
Disability-LowVision
Disability-Mobility
External-Blocked-WinUI3
Fixed
Gathering-Data
good first issue
HCL-E+D
HCL-WindowsTerminal
Help Wanted
Impact-Compatibility
Impact-Compliance
Impact-Correctness
Impact-Visual
In-PR
InclusionBacklog
InclusionBacklog-Windows TerminalWin32
InclusionCommitted-202206
Issue-Bug
Issue-Docs
Issue-Feature
Issue-Feature
Issue-Question
Issue-Samples
Issue-Scenario
Issue-Task
Needs-Attention
Needs-Author-Feedback
Needs-Bisect
Needs-Discussion
Needs-Repro
Needs-Tag-Fix
Needs-Tag-Fix
Needs-Triage
No-Recent-Activity
Priority-0
Priority-1
Priority-2
Priority-3
Product-Cmd.exe
Product-Colortool
Product-Colortool
Product-Colortool
Product-Conhost
Product-Conpty
Product-Meta
Product-Powershell
Product-Terminal
Product-WSL
pull-request
Mirrored from GitHub Pull Request
 Resolution-Answered
Resolution-By-Design
Resolution-Duplicate
Resolution-External
Resolution-Fix-Available
Resolution-Fix-Committed
Resolution-No-Repro
Resolution-Won't-Fix
Severity-Blocking
Severity-Crash
Severity-DataLoss
spam
this-will-be-a-breaking-change
Tracking-External
WindowsTerminal_Win32
Work-Item
zAskModeBug
zInbox-Bug
No Label Area-Settings Issue-Docs Priority-1 Product-Terminal Resolution-Fix-Committed
Milestone
No items
No Milestone
Projects
Clear projects
No project
Assignees
Clear assignees
claunia
No Assignees
1 Participants
Notifications
Due Date
No due date set.
Dependencies

No dependencies set.

Reference: starred/terminal#14168
Delete Branch "%!s()"

Deleting a branch is permanent. Although the deleted branch may continue to exist for a short time before it actually gets removed, it CANNOT be undone in most cases. Continue?