From 84440686adaae485c459698e6f9a7172978eef42 Mon Sep 17 00:00:00 2001
From: rsheeter <rsheeter@google.com>
Date: Tue, 27 Aug 2024 10:12:24 -0700
Subject: [PATCH] Make rebuilding a bit simpler

---
 .gitignore      |  1 +
 BUILD.md        | 66 +++----------------------------------------------
 full_rebuild.sh | 59 +++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 63 insertions(+), 63 deletions(-)
 create mode 100755 full_rebuild.sh

diff --git a/.gitignore b/.gitignore
index 8307d40fe..907f1545a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@ __pycache__/
 waveflag
 build/
 venv/
+emojicompat/
diff --git a/BUILD.md b/BUILD.md
index b9678f680..499456ad0 100644
--- a/BUILD.md
+++ b/BUILD.md
@@ -39,69 +39,9 @@ Edit `NotoColorEmoji.tmpl.ttx.tmpl`
       * New flags are added to `wave_list.txt`
          * To wave only the new flag delete other entries locally
 
-## CBDT
+## Rebuild the fonts
 
 ```bash
-rm -rf venv  # in case you have an old borked venv!
-python3 -m venv venv
-source venv/bin/activate
-pip install -r requirements.txt
-python size_check.py
-rm -rf build/ && time make -j 48
-# Should take 2-3 minutes to create noto-emoji/NotoColorEmoji.ttf
-
-mv *.ttf fonts/
-
-# make noflags CBDT font
-rm fonts/NotoColorEmoji-noflags.ttf
-python drop_flags.py fonts/NotoColorEmoji.ttf
+# Build CBDT, COLR, flags-only, and emojicompat fonts
+$ ./full_rebuild.sh
 ```
-
-## COLRv1
-
-```bash
-# If you are updating to a new Unicode rev, update configs
-python colrv1_generate_configs.py
-git diff colrv1/*.toml
-
-# Compile the fonts
-(cd colrv1 && rm -rf build/ && time nanoemoji *.toml)
-cp colrv1/build/NotoColorEmoji.ttf fonts/Noto-COLRv1.ttf
-cp colrv1/build/NotoColorEmoji-noflags.ttf fonts/Noto-COLRv1-noflags.ttf
-
-# Post-process them
-python colrv1_postproc.py
-```
-
-## Emojicompat
-
-```
-# Add support for new sequences per https://github.com/googlefonts/emojicompat#support-new-unicode-sequences
-# Install https://github.com/googlefonts/emojicompat in a venv
-# Create emojicompat versions of the fonts you made
-# Starting from the root of noto-emoji-next:
-
-$ pushd fonts
-$ cp NotoColorEmoji.ttf NotoColorEmoji-emojicompat.ttf
-$ cp Noto-COLRv1.ttf Noto-COLRv1-emojicompat.ttf
-$ emojicompat --op setup --font NotoColorEmoji-emojicompat.ttf
-$ emojicompat --op setup --font Noto-COLRv1-emojicompat.ttf
-$ emojicompat --op check --font NotoColorEmoji-emojicompat.ttf
-$ emojicompat --op check --font Noto-COLRv1-emojicompat.ttf
-
-# The emojicompat --op check step should print something akin to:
-3835 items_by_codepoints
-0 PUA missing
-0 PUA point at wrong glyph
-3835 PUA correct
-0 Emji entries did NOT match a glyph
-```
-
-## Flags only
-
-```bash
-$ hb-subset --unicodes-file=flags-only-unicodes.txt \
-	--output-file=fonts/NotoColorEmoji-flagsonly.ttf \
-	fonts/NotoColorEmoji.ttf
-$ python update_flag_name.py
-```
\ No newline at end of file
diff --git a/full_rebuild.sh b/full_rebuild.sh
new file mode 100755
index 000000000..37f8fecb4
--- /dev/null
+++ b/full_rebuild.sh
@@ -0,0 +1,59 @@
+#!/usr/bin/env bash
+
+set -e
+set -v
+
+# We have to have hb-subset on PATH
+which hb-subset
+
+# Build the CBDT font
+
+rm -rf venv  # in case you have an old borked venv!
+python3 -m venv venv
+source venv/bin/activate
+pip install -r requirements.txt
+
+rm -rf emojicompat
+git clone git@github.com:googlefonts/emojicompat.git
+pip install emojicompat/
+
+# Validation
+python size_check.py
+rm -rf build/ && time make -j 48
+# Should take 2-3 minutes to create noto-emoji/NotoColorEmoji.ttf
+
+mv *.ttf fonts/
+
+# make noflags CBDT font
+rm fonts/NotoColorEmoji-noflags.ttf
+python drop_flags.py fonts/NotoColorEmoji.ttf
+
+# Build the COLRv1 font (slow)
+
+python colrv1_generate_configs.py
+git diff colrv1/*.toml
+
+# Compile the fonts
+# Should take ~20 minutes
+(cd colrv1 && rm -rf build/ && time nanoemoji *.toml)
+cp colrv1/build/NotoColorEmoji.ttf fonts/Noto-COLRv1.ttf
+cp colrv1/build/NotoColorEmoji-noflags.ttf fonts/Noto-COLRv1-noflags.ttf
+
+# Post-process them
+python colrv1_postproc.py
+
+# Produce emojicompat variants
+# Add support for new sequences per https://github.com/googlefonts/emojicompat#support-new-unicode-sequences
+
+pushd fonts
+cp NotoColorEmoji.ttf NotoColorEmoji-emojicompat.ttf
+cp Noto-COLRv1.ttf Noto-COLRv1-emojicompat.ttf
+emojicompat --op setup --font NotoColorEmoji-emojicompat.ttf
+emojicompat --op setup --font Noto-COLRv1-emojicompat.ttf
+emojicompat --op check --font NotoColorEmoji-emojicompat.ttf
+emojicompat --op check --font Noto-COLRv1-emojicompat.ttf
+
+hb-subset --unicodes-file=flags-only-unicodes.txt \
+   --output-file=fonts/NotoColorEmoji-flagsonly.ttf \
+   fonts/NotoColorEmoji.ttf
+python update_flag_name.py
\ No newline at end of file