From e60c3dc46e3889f29fac70cc6be1530e2741a2f2 Mon Sep 17 00:00:00 2001
From: Lars Wirzenius <liw@sequoia-pgp.org>
Date: Tue, 16 Aug 2022 10:28:45 +0300
Subject: fix: deal with Pandoc AST versioning

Sponsored-by: author
---
 Cargo.lock                       | 1 +
 Cargo.toml                       | 8 +++++++-
 src/bin/pandoc-filter-diagram.rs | 2 +-
 src/lib.rs                       | 5 +++++
 4 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 3336ecc..3e1028d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -617,6 +617,7 @@ dependencies = [
  "anyhow",
  "base64",
  "fehler",
+ "pandoc_ast 0.7.3",
  "pandoc_ast 0.8.0",
  "pikchr",
  "roadmap 0.4.3",
diff --git a/Cargo.toml b/Cargo.toml
index ed32d8c..4c8f5ff 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,10 +11,16 @@ description = '''render diagram markup in a Pandoc abstract syntax tree as SVG''
 repository = "https://gitlab.com/larswirzenius/pandoc-filter-diagram"
 rust-version = "1.56.0"
 
+[features]
+default = ["ast_07"]
+ast_07 = ["pandoc_ast_07"]
+ast_08 = ["pandoc_ast_08"]
+
 [dependencies]
 anyhow = "1.0.50"
 base64 = "0.13.0"
-pandoc_ast = "0.8.0"
+pandoc_ast_07 = { package = "pandoc_ast", version = "0.7", optional = true }
+pandoc_ast_08 = { package = "pandoc_ast", version = "0.8", optional = true }
 pikchr = "0.1.1"
 roadmap = "0.4.3"
 serde = { version = "1.0.101", features = ["derive"] }
diff --git a/src/bin/pandoc-filter-diagram.rs b/src/bin/pandoc-filter-diagram.rs
index c2f808a..7a32f63 100644
--- a/src/bin/pandoc-filter-diagram.rs
+++ b/src/bin/pandoc-filter-diagram.rs
@@ -1,6 +1,6 @@
 //! A program that can be used with the pandoc --filter option.
 
-use pandoc_filter_diagram::DiagramFilter;
+use pandoc_filter_diagram::{pandoc_ast, DiagramFilter};
 use std::io::{Read, Write};
 
 fn main() {
diff --git a/src/lib.rs b/src/lib.rs
index eb55090..c88fdcc 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -50,6 +50,11 @@
 //! }
 //! ```
 
+#[cfg(feature = "pandoc_ast_07")]
+pub extern crate pandoc_ast_07 as pandoc_ast;
+#[cfg(feature = "pandoc_ast_08")]
+pub extern crate pandoc_ast_08 as pandoc_ast;
+
 use pandoc_ast::{Block, Inline, MutVisitor, Pandoc};
 use std::env;
 use std::ffi::OsString;
-- 
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