Make description of acceptingvalue column clearer

Author: owen-mc

cpp/ql/lib/semmle/code/cpp/dataflow/ExternalFlow.qll

@@ -91,9 +91,8 @@
  *    - flow from the _second_ indirection of the 0th argument to the first
  *    indirection of the return value, etc.
  * 8. The `acceptingvalue` column of barrier guard models specifies the condition
- *    under which the guard accepts or blocks flow. It can be one of "true" or
- *    "false". In the future "no-exception", "not-zero", "null", "not-null" may be
- *    supported.
+ *    under which the guard blocks flow. It can be one of "true" or "false". In
+ *    the future "no-exception", "not-zero", "null", "not-null" may be supported.
  * 9. The `kind` column is a tag that can be referenced from QL to determine to
  *    which classes the interpreted elements should be added. For example, for
  *    sources "remote" indicates a default remote flow source, and for summaries

csharp/ql/lib/semmle/code/csharp/dataflow/internal/ExternalFlow.qll

@@ -74,8 +74,8 @@
  *    - "Property[p]": Selects the contents of property `p`.
  *
  * 8. The `acceptingvalue` column of barrier guard models specifies the condition
- *    under which the guard accepts or blocks flow. It can be one of "true" or
- *    "false", "no-exception", "not-zero", "null", "not-null".
+ *    under which the guard blocks flow. It can be one of "true" or "false". In
+ *    the future "no-exception", "not-zero", "null", "not-null" may be supported.
  * 9. The `kind` column is a tag that can be referenced from QL to determine to
  *    which classes the interpreted elements should be added. For example, for
  *    sources "remote" indicates a default remote flow source, and for summaries

go/ql/lib/semmle/go/dataflow/ExternalFlow.qll

@@ -83,9 +83,8 @@
  *    - "Dereference": Selects the value referenced by a pointer.
  *
  * 8. The `acceptingvalue` column of barrier guard models specifies the condition
- *    under which the guard accepts or blocks flow. It can be one of "true" or
- *    "false". In the future "no-exception", "not-zero", "null", "not-null" may be
- *    supported.
+ *    under which the guard blocks flow. It can be one of "true" or "false". In
+ *    the future "no-exception", "not-zero", "null", "not-null" may be supported.
  * 9. The `kind` column is a tag that can be referenced from QL to determine to
  *    which classes the interpreted elements should be added. For example, for
  *    sources "remote" indicates a default remote flow source, and for summaries

java/ql/lib/semmle/code/java/dataflow/ExternalFlow.qll

@@ -74,8 +74,8 @@
  *    - "ReturnValue": Selects the return value of a call to the selected element.
  *    - "Element": Selects the collection elements of the selected element.
  * 8. The `acceptingvalue` column of barrier guard models specifies the condition
- *    under which the guard accepts or blocks flow. It can be one of "true" or
- *    "false", "no-exception", "not-zero", "null", "not-null".
+ *    under which the guard blocks flow. It can be one of "true" or "false". In
+ *    the future "no-exception", "not-zero", "null", "not-null" may be supported.
  * 9. The `kind` column is a tag that can be referenced from QL to determine to
  *    which classes the interpreted elements should be added. For example, for
  *    sources "remote" indicates a default remote flow source, and for summaries