Let HST require at least one letter

(as in mastodon)

Change-Id: I2be91a30a6803933dd64d6a789fc28501ae18632
diff --git a/test/test.js b/test/test.js
index aeaaf10..9eea567 100644
--- a/test/test.js
+++ b/test/test.js
@@ -12,7 +12,7 @@
     var ascimg_count = (stdout.match(/EMOASC/g) || []).length;
     expect(ascimg_count).toBe(30);
     var hst_count = (stdout.match(/\tHST\t/g) || []).length;
-    expect(hst_count).toBe(14);
+    expect(hst_count).toBe(12);
     var url_count = (stdout.match(/\tURL\t/g) || []).length;
     expect(url_count).toBe(4);
     var adr_count = (stdout.match(/\tADR\t/g) || []).length;
@@ -22,7 +22,7 @@
     var eof_count = (stdout.match(/\n# eof/g) || []).length;
     expect(eof_count).toBe(1);
     var lines_count = (stdout.split("\n")).length;
-    expect(lines_count).toBe(810);
+    expect(lines_count).toBe(803);
     done();
   });
 
@@ -35,7 +35,7 @@
     var ascimg_count = (stdout.match(/EMOASC/g) || []).length;
     expect(ascimg_count).toBe(30);
     var hst_count = (stdout.match(/\tHST\t/g) || []).length;
-    expect(hst_count).toBe(14);
+    expect(hst_count).toBe(12);
     var url_count = (stdout.match(/\tURL\t/g) || []).length;
     expect(url_count).toBe(4);
     var adr_count = (stdout.match(/\tADR\t/g) || []).length;
@@ -49,15 +49,17 @@
     const testInput = [
       '# foundry = base',
       '# text_id = test-hashtag',
-      '# text = #KorAP #10',
+      '# text = #KorAP #3D #10',
       ['1', '#KorAP', '_', '_', '_', '_', '_', '_', '_', '_'].join('\t'),
-      ['2', '#10', '_', '_', '_', '_', '_', '_', '_', '_'].join('\t'),
+      ['2', '#3D', '_', '_', '_', '_', '_', '_', '_', '_'].join('\t'),
+      ['3', '#10', '_', '_', '_', '_', '_', '_', '_', '_'].join('\t'),
       ''
     ].join('\n');
     const stdout = execSync('node src/index.js', { input: testInput }).toString();
 
     expect(stdout).toContain('#KorAP\t_\t_\tHST');
-    expect(stdout).toContain('#10\t_\t_\tHST');
+    expect(stdout).toContain('#3D\t_\t_\tHST');
+    expect(stdout).not.toContain('#10\t_\t_\tHST');
 
     var hst_count = (stdout.match(/\tHST\t/g) || []).length;
     expect(hst_count).toBe(2);