fix: Add truncation options for node and edge labels in rendering#2885
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nicolaassolini-qntm merged 6 commits intomainfrom Feb 19, 2026
Merged
fix: Add truncation options for node and edge labels in rendering#2885nicolaassolini-qntm merged 6 commits intomainfrom
nicolaassolini-qntm merged 6 commits intomainfrom
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## main #2885 +/- ##
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Coverage 83.80% 83.81%
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Files 267 267
Lines 53622 53660 +38
Branches 47748 47748
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+ Hits 44940 44975 +35
- Misses 6272 6275 +3
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nicolaassolini-qntm
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aborgna-q
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Feb 19, 2026
hugr-py/src/hugr/hugr/render.py
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| #: If true truncate long type names on edges to `max_edge_label_length` characters | ||
| truncate_edge_labels: bool = True | ||
| #: Max length for edge labels (if truncation is enabled). | ||
| max_edge_label_length: int = 24 | ||
| #: If true truncate node labels to `max_node_label_length` characters. | ||
| truncate_node_labels: bool = True | ||
| #: Max length for node labels (if truncation is enabled). | ||
| max_node_label_length: int = 24 | ||
| #: If true truncate the metadata display to `max_metadata_length` characters. | ||
| truncate_metadata: bool = True | ||
| #: Max length for metadata display (if truncation is enabled). | ||
| max_metadata_length: int = 20 |
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Having a truncate_* set to false means that the max_*_length is ignored.
So someone writing
RenderConfig(max_node_label_length = 42)may get confused on why it doesn't work.
It may be simpler to just have a single field,
max_metadata_length: int | None = 20
where None means don't truncate.
aborgna-q
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Feb 19, 2026
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🤖 I have created a release *beep* *boop* --- ## [0.15.4](hugr-py-v0.15.3...hugr-py-v0.15.4) (2026-02-20) ### Features * **hugr-py:** Define typed Metadata protocol ([#2765](#2765)) ([4390230](4390230)) ### Bug Fixes * Add truncation options for node and edge labels in rendering ([#2885](#2885)) ([25c625d](25c625d)) * used_extensions should include transitive requirements ([#2891](#2891)) ([18e78e4](18e78e4)) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please). --------- Co-authored-by: Agustín Borgna <[email protected]>
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This PR fixes the bug pointed out in #2879
RenderConfiginhugr/hugr/render.pyto control truncation of edge and node labels (truncate_edge_labels,max_edge_label_length,truncate_node_labels,max_node_label_length,truncate_metadata,max_metadata_length)._viz_node, applying the new configuration to ensure node labels do not exceed the specified length._viz_link, using a new_smart_truncatefunction that preserves important tokens and balances brackets, and switched edge label rendering to usexlabelfor better display.