diff options
| -rw-r--r-- | test-suite/bugs/closed/4970.v | 3 | ||||
| -rw-r--r-- | toplevel/metasyntax.ml | 5 |
2 files changed, 7 insertions, 1 deletions
diff --git a/test-suite/bugs/closed/4970.v b/test-suite/bugs/closed/4970.v new file mode 100644 index 000000000..7a896582f --- /dev/null +++ b/test-suite/bugs/closed/4970.v @@ -0,0 +1,3 @@ +(* Check "{{" is not confused with "{" in notations *) +Reserved Notation "x {{ y }}" (at level 40). +Notation "x {{ y }}" := (x y) (only parsing). diff --git a/toplevel/metasyntax.ml b/toplevel/metasyntax.ml index 42f65dfb5..008d5cf9f 100644 --- a/toplevel/metasyntax.ml +++ b/toplevel/metasyntax.ml @@ -1093,7 +1093,10 @@ let contract_notation ntn = let rec aux ntn i = if i <= String.length ntn - 5 then let ntn' = - if String.is_sub "{ _ }" ntn i then + if String.is_sub "{ _ }" ntn i && + (i = 0 || ntn.[i-1] = ' ') && + (i = String.length ntn - 5 || ntn.[i+5] = ' ') + then String.sub ntn 0 i ^ "_" ^ String.sub ntn (i+5) (String.length ntn -i-5) else ntn in |