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commit 4a0ca2071e61f7f135d2cee846f8158c8214e9da
Author: Andy Seaborne <[email protected]>
AuthorDate: Sun Jun 28 22:03:15 2026 +0100

    Add comment in main.jj
---
 jena-arq/Grammar/arq.jj  | 1 +
 jena-arq/Grammar/main.jj | 1 +
 2 files changed, 2 insertions(+)

diff --git a/jena-arq/Grammar/arq.jj b/jena-arq/Grammar/arq.jj
index 988beb3f17..1062221641 100644
--- a/jena-arq/Grammar/arq.jj
+++ b/jena-arq/Grammar/arq.jj
@@ -2480,6 +2480,7 @@ TOKEN:
           ["\u200C"-"\u200D"] | ["\u2070"-"\u218F"] | ["\u2C00"-"\u2FEF"] |
           ["\u3001"-"\uD7FF"] | ["\uF900"-"\uFFFD"]
           // [#x10000-#xEFFFF]
+          // \-U not legal here so as an extension allow surrogate pairs.
           // Put in surrogate pairs because by the time javacc sees codepoints,
           // they are in UTF-16.
           | <SURROGATE_PAIR>
diff --git a/jena-arq/Grammar/main.jj b/jena-arq/Grammar/main.jj
index 2be4b93b03..c8e75a01dc 100644
--- a/jena-arq/Grammar/main.jj
+++ b/jena-arq/Grammar/main.jj
@@ -3066,6 +3066,7 @@ TOKEN:
           ["\u3001"-"\uD7FF"] | ["\uF900"-"\uFFFD"] 
           // [#x10000-#xEFFFF]
 #ifdef ARQ
+          // \-U not legal here so as an extension allow surrogate pairs.
           // Put in surrogate pairs because by the time javacc sees codepoints,
           // they are in UTF-16.
           | <SURROGATE_PAIR>

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