From ed7843fe00dafdc44b60e613a1a9e33c598e843e Mon Sep 17 00:00:00 2001
From: Lars Wirzenius <liw@liw.fi>
Date: Sun, 23 Jun 2019 10:28:00 +0300
Subject: Change: command line syntax of ftt-docgen

---
 Makefile   |  2 +-
 ftt-docgen | 14 ++++++++++++--
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index 379b2a8..af6a25c 100644
--- a/Makefile
+++ b/Makefile
@@ -10,7 +10,7 @@ publish:
 	install -m 0644 $(outputs) files
 
 .md.tmp:
-	./ftt-docgen $$(basename $< .md).yaml $< > $@
+	./ftt-docgen $< > $@
 
 .tmp.pdf:
 	./ftt-pandoc $< -o $@
diff --git a/ftt-docgen b/ftt-docgen
index f1f23a7..f73bb27 100755
--- a/ftt-docgen
+++ b/ftt-docgen
@@ -1,6 +1,7 @@
 #!/usr/bin/env python3
 
 import copy
+import os
 import re
 import sys
 
@@ -228,14 +229,23 @@ def walk(o, func):
         for c in o.children:
             walk(c, func)
 
+def infer_bindings_filename(markdowns):
+    root, ext = os.path.splitext(markdowns[0])
+    if ext not in ['.md', '.mdwn']:
+        sys.exit('Input filenames must end in .md or .mdwn')
+    return root + '.yaml'
+
 def debug(msg):
     if False:
         sys.stderr.write('DEBUG: {}\n'.format(msg))
         sys.stderr.flush()
 
-bindings = yaml.safe_load(open(sys.argv[1]))
+markdowns = sys.argv[1:]
+text = ''.join(open(filename).read() for filename in markdowns)
+
+with open(infer_bindings_filename(markdowns)) as f:
+    bindings = yaml.safe_load(f)
 
-text = ''.join(open(filename).read() for filename in sys.argv[2:])
 
 start = '---\n'
 end = '\n...\n'
-- 
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