[mvt] support concat expression

[3nids]

fixes #58364

Regarding the layer from the ticket, it is now loaded in QGIS but nothing appears on the map. I didn't investigate more for now.
Worth mentionning that clicking on the layer toponyme - parcellaire - adresse in maputnik (web) makes it crash.

[nirvn]

Nice, I had a similar fix in mind.

[nicogodet]

@3nids May thanks for the fix !

Without

With (expression manually added)

[github-actions]

🪟 Windows builds ready!

Windows builds of this PR are available for testing here. Debug symbols for this build are available here.

(Built from commit 07a3d0a)

[qgis-bot]

The backport to queued_ltr_backports failed:

The process '/usr/bin/git' failed with exit code 1

stderr

error: could not apply 07a3d0ac881... [mvt] support concat expression
hint: After resolving the conflicts, mark them with
hint: "git add/rm <pathspec>", then run
hint: "git cherry-pick --continue".
hint: You can instead skip this commit with "git cherry-pick --skip".
hint: To abort and get back to the state before "git cherry-pick",
hint: run "git cherry-pick --abort".
hint: Disable this message with "git config advice.mergeConflict false"

stdout

Auto-merging src/core/vectortile/qgsmapboxglstyleconverter.cpp
CONFLICT (content): Merge conflict in src/core/vectortile/qgsmapboxglstyleconverter.cpp
Auto-merging tests/src/python/test_qgsmapboxglconverter.py
CONFLICT (content): Merge conflict in tests/src/python/test_qgsmapboxglconverter.py

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-queued_ltr_backports queued_ltr_backports
# Navigate to the new working tree
cd .worktrees/backport-queued_ltr_backports
# Create a new branch
git switch --create backport-58623-to-queued_ltr_backports
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick 07a3d0ac88136121ab03e4ed450e76c70f663d9e
# Push it to GitHub
git push --set-upstream origin backport-58623-to-queued_ltr_backports
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-queued_ltr_backports

Then, create a pull request where the base branch is queued_ltr_backports and the compare/head branch is backport-58623-to-queued_ltr_backports.

[qgis-bot]

The backport to release-3_38 failed:

The process '/usr/bin/git' failed with exit code 1

stderr

error: could not apply 07a3d0ac881... [mvt] support concat expression
hint: After resolving the conflicts, mark them with
hint: "git add/rm <pathspec>", then run
hint: "git cherry-pick --continue".
hint: You can instead skip this commit with "git cherry-pick --skip".
hint: To abort and get back to the state before "git cherry-pick",
hint: run "git cherry-pick --abort".
hint: Disable this message with "git config advice.mergeConflict false"

stdout

Auto-merging src/core/vectortile/qgsmapboxglstyleconverter.cpp
CONFLICT (content): Merge conflict in src/core/vectortile/qgsmapboxglstyleconverter.cpp
Auto-merging tests/src/python/test_qgsmapboxglconverter.py
CONFLICT (content): Merge conflict in tests/src/python/test_qgsmapboxglconverter.py

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-release-3_38 release-3_38
# Navigate to the new working tree
cd .worktrees/backport-release-3_38
# Create a new branch
git switch --create backport-58623-to-release-3_38
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick 07a3d0ac88136121ab03e4ed450e76c70f663d9e
# Push it to GitHub
git push --set-upstream origin backport-58623-to-release-3_38
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-release-3_38

Then, create a pull request where the base branch is release-3_38 and the compare/head branch is backport-58623-to-release-3_38.