font-patcher: Patch in heavy angle brackets

[why]
The heavy angle brackets (276E and 276F) are used for a lot of prompts,
but we do not yet patch them in and a lot of fonts do not bring them
themselves.

[how]
One time rip the glyphs out from Hack and patch them in always, but
careful (do not replace existing glyph).
We take the whole set 276C - 2771.

[note]
Usually we should never again need to run the generate-extraglyphs
script, we rip them out now and they look good. Whatever Hack does with
new versions we can follow but that is optional.

Related: #1110

Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>

bin/scripts/README.md

@@ -11,6 +11,7 @@ Note: Usually you need to call the scripts in this directory while actually bein
 * `fpfix.py`: Can be used to set isFixedPitch property in a font [x]
 * `generate-casks.sh`: Generates cask files for fonts from data in `archives/` [6]
 * `generate-css.sh`: Generates the Nerd Fonts CCS, which can be used to access the glyphs on a web page, and the Cheat Sheet [1]
+* `generate-extraglyphs.py:` Generates `extraglyphs.sfd` from Hack Regular [4]
 * `generate-fontconfig.sh`: Generates font configuration to enable use of unpatched fonts with Symbols Only Nerd Font [1]
 * `generate-font-image-previews.sh`: Generates the preview images for `nerdfonts.com` (i.e. gh-pages) [3]
 * `generate-glyph-info-from-set.py`: Generate the `i_xxx.sh` file from a glyph source (font) file, if the glyphs are named correctly [4]

bin/scripts/generate-extraglyphs.py

@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+# Nerd Fonts Version: 2.3.3
+# Script Version: 1.0.0
+# Generates extrasymbols.sfd from Hack
+
+import os
+import fontforge
+
+srcdir = '../../src'
+srcfont = 'unpatched-fonts/Hack/Regular/Hack-Regular.ttf'
+outfont = 'glyphs/extraglyphs.sfd'
+
+print('Opening {}'.format(outfont))
+font = fontforge.open(os.path.join(srcdir, srcfont))
+
+font.selection.select(
+    0x276C, # medium left-pointing angle bracket
+    0x276D, # medium right-pointing angle bracket
+    0x276E, # heavy left-pointing angle quotation mark
+    0x276F, # heavy right-pointing angle quotation mark
+    0x2770, # heavy left-pointing angle bracket
+    0x2771, # heavy right-pointing angle bracket
+)
+
+num_icons = len(list(font.selection))
+
+font.selection.invert()
+font.clear()
+
+print('Generating {} with {} glyphs'.format(outfont, num_icons))
+font.generate(os.path.join(srcdir, outfont), flags=("no-FFTM-table",))
+font.close()

font-patcher

@@ -6,7 +6,7 @@
 from __future__ import absolute_import, print_function, unicode_literals
 
 # Change the script version when you edit this script:
-script_version = "3.5.3"
+script_version = "3.5.4"
 
 version = "2.3.3"
 projectName = "Nerd Fonts"
@@ -796,6 +796,9 @@ class font_patcher:
             0xf0dd: {'align': 'c', 'valign': '', 'stretch': 'pa', 'params': {}},
             0xf0de: {'align': 'c', 'valign': '', 'stretch': 'pa', 'params': {}}
         }
+        SYM_ATTR_HEAVYBRACKETS = {
+            'default': {'align': 'c', 'valign': 'c', 'stretch': 'pa', 'params': {'careful': True}}
+        }
 
         CUSTOM_ATTR = {
             # 'pa' == preserve aspect ratio
@@ -895,6 +898,7 @@ class font_patcher:
         # Symbol font ranges
         self.patch_set = [
             {'Enabled': True,                           'Name': "Seti-UI + Custom",        'Filename': "original-source.otf",                            'Exact': False, 'SymStart': 0xE4FA, 'SymEnd': 0xE5AA, 'SrcStart': 0xE5FA, 'ScaleRules': None,             'Attributes': SYM_ATTR_DEFAULT},
+            {'Enabled': True,                           'Name': "Heavy Angle Brackets",    'Filename': "extraglyphs.sfd",                                'Exact': True,  'SymStart': 0x0000, 'SymEnd': 0x0000, 'SrcStart': None,   'ScaleRules': None,             'Attributes': SYM_ATTR_HEAVYBRACKETS},
             {'Enabled': True,                           'Name': "Devicons",                'Filename': "devicons.ttf",                                   'Exact': False, 'SymStart': 0xE600, 'SymEnd': 0xE6C5, 'SrcStart': 0xE700, 'ScaleRules': DEVI_SCALE_LIST,  'Attributes': SYM_ATTR_DEFAULT},
             {'Enabled': self.args.powerline,            'Name': "Powerline Symbols",       'Filename': "powerline-symbols/PowerlineSymbols.otf",         'Exact': True,  'SymStart': 0xE0A0, 'SymEnd': 0xE0A2, 'SrcStart': None,   'ScaleRules': None,             'Attributes': SYM_ATTR_POWERLINE},
             {'Enabled': self.args.powerline,            'Name': "Powerline Symbols",       'Filename': "powerline-symbols/PowerlineSymbols.otf",         'Exact': True,  'SymStart': 0xE0B0, 'SymEnd': 0xE0B3, 'SrcStart': None,   'ScaleRules': None,             'Attributes': SYM_ATTR_POWERLINE},