Inverse Powerline Triangle evolution
              > also noticed that the inverse + regular don't line up correctly such that they form a perfect arrow

That problem is already mentioned right in the top of this thread/PR, with a possible fix given in https://github.com/ryanoasis/nerd-fonts/pull/1490#issuecomment-1903418143 above (I sketched exactly that image on paper there ;)

The culprit are the 'landing platforms' on the left resp right that help avoid the vertical colored lines problem.
Are these adjacent triangular things a common setup?

I'll add the new patched font into this comment in a minute...

_Edit:_

[FiraCodeNerdFont-Regular.zip](https://github.com/user-attachments/files/16669526/FiraCodeNerdFont-Regular.zip)

Green is the new outline:

![image](https://github.com/user-attachments/assets/6b6ace27-116a-4c9b-a4ff-7e15c755f89e)

```diff
--- a/font-patcher
+++ b/font-patcher
@@ -853,8 +853,8 @@ class font_patcher:
                 box_enabled = False # Cowardly not scaling existing glyphs, although the code would allow this
 
         # Stretch 'xz' or 'pa' (preserve aspect ratio)
-        # Supported params: overlap | careful | xy-ratio | dont_copy | ypadding
-        # Overlap value is used horizontally but vertically limited to 0.01
+        # Supported params: overlap | voverlap | careful | xy-ratio | dont_copy | ypadding
+        # Overlap value is used horizontally but vertically limited to 0.01 (or specified by voverlap)
         # Careful does not overwrite/modify existing glyphs
         # The xy-ratio limits the x-scale for a given y-scale to make the ratio <= this value (to prevent over-wide glyphs)
         # '1' means occupu 1 cell (default for 'xy')
@@ -878,8 +878,8 @@ class font_patcher:
             0xe0b3: {'align': 'r', 'valign': 'c', 'stretch': '^xy', 'params': {'xy-ratio': 0.7}},
 
             # Inverse arrow tips
-            0xe0d6: {'align': 'l', 'valign': 'c', 'stretch': '^xy', 'params': {'overlap': 0.05, 'xy-ratio': 0.7}},
-            0xe0d7: {'align': 'r', 'valign': 'c', 'stretch': '^xy', 'params': {'overlap': 0.05, 'xy-ratio': 0.7}},
+            0xe0d6: {'align': 'l', 'valign': 'c', 'stretch': '^xy', 'params': {'overlap': 0.05, 'xy-ratio': 0.7, 'voverlap': 0.0}},
+            0xe0d7: {'align': 'r', 'valign': 'c', 'stretch': '^xy', 'params': {'overlap': 0.05, 'xy-ratio': 0.7, 'voverlap': 0.0}},
 
             # Rounded arcs
             0xe0b4: {'align': 'l', 'valign': 'c', 'stretch': '^xy', 'params': {'overlap': 0.06, 'xy-ratio': 0.59}},
@@ -1502,8 +1502,9 @@ class font_patcher:
                 logger.critical("Conflicting params: overlap and ypadding")
                 sys.exit(1)
             if overlap:
+                voverlap = sym_attr['params'].get('voverlap')
                 scale_ratio_x *= 1.0 + (self.font_dim['width'] / (sym_dim['width'] * scale_ratio_x)) * overlap
-                y_overlap = min(0.01, overlap) # never aggressive vertical overlap
+                y_overlap = voverlap if voverlap is not None else min(0.01, overlap) # never aggressive vertical overlap
                 scale_ratio_y *= 1.0 + (self.font_dim['height'] / (sym_dim['height'] * scale_ratio_y)) * y_overlap
 
             # Size in x to size in y ratio limit (to prevent over-wide glyphs)
```
(Took actually not 'a minute' but 40 :grimacing: )

_Originally posted by @Finii in https://github.com/ryanoasis/nerd-fonts/issues/1490#issuecomment-2297973105_
            