Misc: bash, rust, helix

- Fix: `.bashrc` not loaded when `.bash_login` doesn't exist
- Fix: Rust install script error when `cc` doesn't exist
- Style: use tabs
- Helix: use tabs for bash, toml, & markdown
- Helix: highlight rust scripts

auto/bash/bash

@@ -39,10 +39,24 @@ EOF
 if [ -f ~/.bash_profile ]; then
 	mv ~/.bash_profile ~/.bash_login
 fi
-cat >> ~/.bash_login << 'EOF'
+if [ -f ~/.bash_login ]; then
+	cat >> ~/.bash_login << 'EOF'
 
 # custom
 
+EOF
+else
+	cat >> ~/.bash_login << 'EOF'
+
+# custom
+
+if [ -f ~/.bashrc ]; then
+	. ~/.bashrc
+fi
+
+EOF
+fi
+cat >> ~/.bash_login << 'EOF'
 if [ -z "$TMUX" ] && [ -n "$SSH_TTY" ]; then
 	tput sc
 	tput smso

manual/helix/helix

@@ -54,9 +54,9 @@ auto-pairs = false
 
 [[language]]
 name = 'rust'
-indent.unit = "\t"
-indent.tab-width = 4
+indent = { tab-width = 4, unit = "\t" }
 config.checkOnSave = { command = "clippy" }
+shebangs = ["rust-script"]
 
 [[language]]
 name = "c"
@@ -68,11 +68,19 @@ indent = { tab-width = 4, unit = "\t" }
 
 [[language]]
 name = 'java'
-indent.unit = "\t"
-indent.tab-width = 4
+indent = { tab-width = 4, unit = "\t" }
+
+[[language]]
+name = "bash"
+indent = { tab-width = 4, unit = "\t" }
+
+[[language]]
+name = "toml"
+indent = { tab-width = 4, unit = "\t" }
 
 [[language]]
 name = "markdown"
+indent = { tab-width = 4, unit = "\t" }
 language-server = { command = "ltex-ls" }
 file-types = ["md"]
 scope = "source.markdown"

manual/rust/rust

@@ -10,6 +10,10 @@ if ! command -v curl > /dev/null; then
 	echo "Error: curl not found"
 	exit 1
 fi
+if ! command -v cc > /dev/null; then
+	echo "Error: cc not found"
+	exit 1
+fi
 if command -v cargo > /dev/null && [ "$force" != true ]; then
 	echo "Error: rust already installed; use -f to force"
 	exit 1