Adding single quote as empty character in block font

Updating the preview at the same time with better code for GET data and different texts to preview in the selected font
NOTE that the single quote will break the line as it is not considered a character, this will have to be fixed in the future

block/block.sfd

@@ -23,7 +23,7 @@ OS2Version: 0
 OS2_WeightWidthSlopeOnly: 0
 OS2_UseTypoMetrics: 1
 CreationTime: 1641441649
-ModificationTime: 1642232737
+ModificationTime: 1642306463
 PfmFamily: 17
 TTFWeight: 400
 TTFWidth: 5
@@ -75,7 +75,7 @@ FitToEm: 0
 BeginPrivate: 0
 EndPrivate
 TeXData: 1 0 0 262144 131072 87381 838656 1048576 87381 783286 444596 497025 792723 393216 433062 380633 303038 157286 324010 404750 52429 2506097 1059062 262144
-BeginChars: 266 79
+BeginChars: 266 80
 
 StartChar: A
 Encoding: 65 65 0
@@ -1083,7 +1083,6 @@ EndChar
 StartChar: glyph77
 Encoding: 40 40 77
 Width: 384
-VWidth: 0
 UnlinkRmOvrlpSave: 1
 Flags: HW
 LayerCount: 2
@@ -1096,13 +1095,11 @@ Refer: 60 -1 N 1 0 0 1 128 0 2
 Refer: 59 -1 N 1 0 0 1 128 0 2
 Refer: 58 -1 N 1 0 0 1 128 0 2
 Refer: 57 -1 N 1 0 0 1 128 0 2
-Refer: 56 -1 N 1 0 0 1 128 0 2
 EndChar
 
 StartChar: glyph78
 Encoding: 41 41 78
 Width: 384
-VWidth: 0
 UnlinkRmOvrlpSave: 1
 Flags: HW
 LayerCount: 2
@@ -1117,5 +1114,14 @@ Refer: 58 -1 N 1 0 0 1 128 0 2
 Refer: 57 -1 N 1 0 0 1 128 0 2
 Refer: 56 -1 N 1 0 0 1 128 0 2
 EndChar
+
+StartChar: glyph79
+Encoding: 39 39 79
+Width: 0
+VWidth: 0
+UnlinkRmOvrlpSave: 1
+Flags: HW
+LayerCount: 2
+EndChar
 EndChars
 EndSplineFont

block/configure.py

@@ -111,22 +111,23 @@ def new_char(ch=None, outline=None, *, name=None, width=CHAR_WIDTH, references=N
         new_char(name=ch, outline=os.path.join(path, filename))
 
     ### GLYPHS ###
+    new_char('\'', width=0)
     new_char(' ', width=CHAR_WIDTH*2)
     new_char(',', width=CHAR_WIDTH * 2)
     new_char('.', width=CHAR_WIDTH * 4)
     new_char('"', width=CHAR_WIDTH*3, references=[
-        ('block-u1', psMat.translate(CHAR_WIDTH, 0)),
-        ('block-d3', psMat.translate(CHAR_WIDTH, 0)),
+        (BLOCK_U1, psMat.translate(CHAR_WIDTH, 0)),
+        (BLOCK_D3, psMat.translate(CHAR_WIDTH, 0)),
     ])
     new_char('!', width=CHAR_WIDTH*3, references=[
-        ('block-u1', psMat.translate(CHAR_WIDTH, 0)),
-        ('block-u2', psMat.translate(CHAR_WIDTH, 0)),
-        ('block-u3', psMat.translate(CHAR_WIDTH, 0)),
-        ('block-c1', psMat.translate(CHAR_WIDTH, 0)),
-        ('block-c2', psMat.translate(CHAR_WIDTH, 0)),
-        ('block-d1', psMat.translate(CHAR_WIDTH, 0)),
-
-        ('block-d3', psMat.translate(CHAR_WIDTH, 0)),
+        (BLOCK_U1, psMat.translate(CHAR_WIDTH, 0)),
+        (BLOCK_U2, psMat.translate(CHAR_WIDTH, 0)),
+        (BLOCK_U3, psMat.translate(CHAR_WIDTH, 0)),
+        (BLOCK_C1, psMat.translate(CHAR_WIDTH, 0)),
+        (BLOCK_C2, psMat.translate(CHAR_WIDTH, 0)),
+        (BLOCK_D1, psMat.translate(CHAR_WIDTH, 0)),
+
+        (BLOCK_D3, psMat.translate(CHAR_WIDTH, 0)),
     ])
     new_char('(', width=CHAR_WIDTH*3, references=[
         (BLOCK_1, psMat.translate(CHAR_WIDTH, 0)),