diff --git a/completions/_rust b/completions/_rust
new file mode 100644
index 0000000..404f622
--- /dev/null
+++ b/completions/_rust
@@ -0,0 +1,215 @@
+#compdef rustc
+
+local -a _rustc_opts_switches _rustc_opts_lint _rustc_opts_debug
+
+typeset -A opt_args
+
+_rustc_debuginfo_levels=(
+    "0[no debug info]"
+    "1[line-tables only (for stacktraces and breakpoints)]"
+    "2[full debug info with variable and type information (same as -g)]"
+)
+
+_rustc_crate_types=(
+    'bin'
+    'lib'
+    'rlib'
+    'dylib'
+    'staticlib'
+)
+
+_rustc_emit_types=(
+    'asm'
+    'llvm-bc'
+    'llvm-ir'
+    'obj'
+    'link'
+    'dep-info'
+)
+_rustc_pretty_types=(
+    'normal[un-annotated source]'
+    'expanded[crates expanded]'
+    'typed[crates  expanded,  with  type  annotations]'
+    'identified[fully parenthesized, AST nodes and blocks with IDs]'
+    'flowgraph[graphviz formatted flowgraph for node]:NODEID:'
+)
+_rustc_color_types=(
+    'auto[colorize, if output goes to a tty (default)]'
+    'always[always colorize output]'
+    'never[never colorize output]'
+)
+_rustc_info_types=(
+    'crate-name[Output the crate name and exit]'
+    'file-names[Output the file(s) that would be written if compilation continued and exited]'
+    'sysroot[Output the sysroot and exit]'
+)
+
+_rustc_opts_vals=(
+    --crate-name='[Specify the name of the crate being built]'
+    --crate-type='[Comma separated list of types of crates for the compiler to emit]:TYPES:_values -s "," "Crate types"  "$_rustc_crate_types[@]"'
+    --emit='[Comma separated list of types of output for the compiler to emit]:TYPES:_values -s "," "Emit Targets" "$_rustc_emit_types[@]"'
+    --cfg='[Configure the compilation environment]:SPEC:'
+    --out-dir='[Write output to compiler-chosen filename in <dir>.  Ignored  if  -o  is  specified. (default the current directory)]:DIR:_files -/'
+    -o'[Write output to <filename>. Ignored if more than one --emit is specified.]:FILENAME:_files'
+    --pretty='[Pretty-print the input instead of compiling]::TYPE:_values "TYPES" "$_rustc_pretty_types[@]"'
+    -L'[Add a directory to the library search path]:DIR:_files -/'
+    --target='[Target triple cpu-manufacturer-kernel\[-os\] to compile]:TRIPLE:'
+    --color='[Configure coloring of output]:CONF:_values "COLORS" "$_rustc_color_types[@]"'
+    {-v,--version}'[Print version info and exit]::VERBOSE:(verbose)'
+    --explain='[Provide a detailed explanation of an error message]:OPT:'
+    --extern'[Specify where an external rust library is located]:ARG:'
+    --print='[Comma separated list of compiler information to print on stdout]:TYPES:_values -s "," "Compiler Information" "$_rustc_info_types[@]"'
+)
+
+_rustc_opts_switches=(
+    -g'[Equivalent to -C debuginfo=2]'
+    {-h,--help}'[Display the help message]'
+    {-V,--verbose}'[use verbose output]'
+    -O'[Equivalent to -C opt-level=2]'
+    --test'[Build a test harness]'
+)
+
+
+_rustc_opts_link=(
+    'static[Path to the library to link statically]:PATH:_files -/'
+    'dylib[Path to the library to link dynamically]:PATH:_files -/'
+    'framework[Path to the library to link as a framework]:PATH:_files -/'
+)
+
+_rustc_opts_codegen=(
+    'ar[Path to the archive utility to use when assembling archives.]:BIN:_path_files'
+    'linker[Path to the linker utility to use when linking libraries, executables, and objects.]:BIN:_path_files'
+    'link-args[A space-separated list of extra arguments to pass to the linker when the linker is invoked.]:ARGS:'
+    'lto[Perform LLVM link-time optimizations]'
+    'target-cpu[Selects a target processor. If the value is "help", then a list of  available  CPUs is printed.]:CPU:'
+    'target-feature[A space-separated list of features to enable or disable for the target. A preceding "+" enables a feature while a preceding "-" disables it. Available features can be discovered through target-cpu=help.]:FEATURE:'
+    'passes[A space-separated list of extra LLVM passes to run. A value of "list" will cause rustc to print all known passes and exit. The passes specified are appended at the end of the normal pass manager.]:LIST:'
+    'llvm-args[A space-separated list of arguments to pass through to LLVM.]:ARGS:'
+    'save-temps[If specified, the compiler will save more files (.bc, .o, .no-opt.bc) generated throughout compilation in the output directory.]'
+    'rpath[If specified, then the rpath value for dynamic libraries will be set in either dynamic library or executable outputs.]'
+    'no-prepopulate-passes[Suppresses pre-population of the LLVM pass manager that is run over the module.]'
+    'no-vectorize-loops[Suppresses running the loop vectorization LLVM pass, regardless of optimization level.]'
+    'no-vectorize-slp[Suppresses running the LLVM SLP vectorization pass, regardless of optimization level.]'
+    'soft-float[Generates software floating point library calls instead of hardware instructions.]'
+    'prefer-dynamic[Prefers dynamic linking to static linking.]'
+    "no-integrated-as[Force usage of an external assembler rather than LLVM's integrated one.]"
+    'no-redzone[disable the use of the redzone]'
+    'relocation-model[The relocation model to use. (default: pic)]:MODEL:(pic static dynamic-no-pic)'
+    'code-model[choose the code model to use (llc -code-model for details)]:MODEL:'
+    'metadata[metadata to mangle symbol names with]:VAL:'
+    'extra-filenames[extra data to put in each output filename]:VAL:'
+    'codegen-units[divide crate into N units to optimize in parallel]:N:'
+    'remark[print remarks for these optimization passes (space separated, or "all")]:TYPE:'
+    'debuginfo[debug info emission level, 0 = no debug info, 1 = line tables only, 2 = full debug info with variable and type information]:LEVEL:_values "Debug Levels" "$_rustc_debuginfo_levels[@]"'
+    'opt-level[Optimize with possible levels 0-3]:LEVEL:(0 1 2 3)'
+    'help[Show all codegen options]'
+)
+
+_rustc_opts_lint=(
+    'help[Show a list of all lints]'
+    'box-pointers[(default: allow) use of owned (Box type) heap memory]'
+    'experimental[(default: allow) detects use of #\[experimental\] items]'
+    'fat-ptr-transmutes[(default: allow) detects transmutes of fat pointers]'
+    'missing-docs[(default: allow) detects missing documentation for public members]'
+    'unsafe-blocks[(default: allow) usage of an "unsafe" block]'
+    'unstable[(default: allow) detects use of #\[unstable\] items (incl. items with no stability attribute)]'
+    'unused-extern-crates[(default: allow) extern crates that are never used]'
+    'unused-import-braces[(default: allow) unnecessary braces around an imported item]'
+    'unused-qualifications[(default: allow) detects unnecessarily qualified names]'
+    'unused-results[(default: allow) unused result of an expression in a statement]'
+    'unused-typecasts[(default: allow) detects unnecessary type casts that can be removed]'
+    'variant-size-differences[(default: allow) detects enums with widely varying variant sizes]'
+    'dead-code[(default: warn) detect unused, unexported items]'
+    'deprecated[(default: warn) detects use of #\[deprecated\] items]'
+    'improper-ctypes[(default: warn) proper use of libc types in foreign modules]'
+    'missing-copy-implementations[(default: warn) detects potentially-forgotten implementations of "Copy"]'
+    'non-camel-case-types[(default: warn) types, variants, traits and type parameters should have camel case names]'
+    'non-shorthand-field-patterns[(default: warn) using "Struct { x: x }" instead of "Struct { x }"]'
+    'non-snake-case[(default: warn) methods, functions, lifetime parameters and modules should have snake case names]'
+    'non-upper-case-globals[(default: warn) static constants should have uppercase identifiers]'
+    'overflowing-literals[(default: warn) literal out of range for its type]'
+    'path-statements[(default: warn) path statements with no effect]'
+    'raw-pointer-deriving[(default: warn) uses of #\[derive\] with raw pointers are rarely correct]'
+    'unknown-lints[(default: warn) unrecognized lint attribute]'
+    'unreachable-code[(default: warn) detects unreachable code paths]'
+    'unsigned-negation[(default: warn) using an unary minus operator on unsigned type]'
+    'unused-allocation[(default: warn) detects unnecessary allocations that can be eliminated]'
+    'unused-assignments[(default: warn) detect assignments that will never be read]'
+    'unused-attributes[(default: warn) detects attributes that were not used by the compiler]'
+    'unused-comparisons[(default: warn) comparisons made useless by limits of the types involved]'
+    'unused-imports[(default: warn) imports that are never used]'
+    'unused-must-use[(default: warn) unused result of a type flagged as must_use]'
+    "unused-mut[(default: warn) detect mut variables which don't need to be mutable]"
+    'unused-parens[(default: warn) "if", "match", "while" and "return" do not need parentheses]'
+    'unused-unsafe[(default: warn) unnecessary use of an "unsafe" block]'
+    'unused-variables[(default: warn) detect variables which are not used in any way]'
+    'warnings[(default: warn) mass-change the level for lints which produce warnings]'
+    'while-true[(default: warn) suggest using "loop { }" instead of "while true { }"]'
+    "exceeding-bitshifts[(default: deny) shift exceeds the type's number of bits]"
+    'unknown-crate-types[(default: deny) unknown crate type found in #\[crate_type\] directive]'
+    'unknown-features[(default: deny) unknown features found in crate-level #\[feature\] directives]'
+    'bad-style[non-camel-case-types, non-snake-case, non-upper-case-globals]'
+    'unused[unused-imports, unused-variables, unused-assignments, dead-code, unused-mut, unreachable-code, unused-must-use, unused-unsafe, path-statements]'
+)
+
+_rustc_opts_debug=(
+    'verbose[in general, enable more debug printouts]'
+    'time-passes[measure time of each rustc pass]'
+    'count-llvm-insns[count where LLVM instrs originate]'
+    'time-llvm-passes[measure time of each LLVM pass]'
+    'trans-stats[gather trans statistics]'
+    'asm-comments[generate comments into the assembly (may change behavior)]'
+    'no-verify[skip LLVM verification]'
+    'borrowck-stats[gather borrowck statistics]'
+    'no-landing-pads[omit landing pads for unwinding]'
+    'debug-llvm[enable debug output from LLVM]'
+    'show-span[show spans for compiler debugging]'
+    'count-type-sizes[count the sizes of aggregate types]'
+    'meta-stats[gather metadata statistics]'
+    'print-link-args[Print the arguments passed to the linker]'
+    'gc[Garbage collect shared data (experimental)]'
+    'print-llvm-passes[Prints the llvm optimization passes being run]'
+    'ast-json[Print the AST as JSON and halt]'
+    'ast-json-noexpand[Print the pre-expansion AST as JSON and halt]'
+    'ls[List the symbols defined by a library crate]'
+    'save-analysis[Write syntax and type analysis information in addition to normal output]'
+    'flowgraph-print-loans[Include loan analysis data in --pretty flowgraph output]'
+    'flowgraph-print-moves[Include move analysis data in --pretty flowgraph output]'
+    'flowgraph-print-assigns[Include assignment analysis data in --pretty flowgraph output]'
+    'flowgraph-print-all[Include all dataflow analysis data in --pretty flowgraph output]'
+    'print-regiion-graph[Prints region inference graph. Use with RUST_REGION_GRAPH=help for more info]'
+    'parse-only[Parse only; do not compile, assemble, or link]'
+    'no-trans[Run all passes except translation; no output]'
+    'no-analysis[Parse and expand the source, but run no analysis]'
+    'unstable-options[Adds unstable command line options to rustc interface]'
+    'print-enum-sizes[Print the size of enums and their variants]'
+)
+
+_rustc_opts_fun_lint(){
+    _values -s , 'options' \
+        "$_rustc_opts_lint[@]"
+}
+
+_rustc_opts_fun_debug(){
+    _values 'options' "$_rustc_opts_debug[@]"
+}
+
+_rustc_opts_fun_codegen(){
+    _values 'options' "$_rustc_opts_codegen[@]"
+}
+
+_rustc_opts_fun_link(){
+    _values 'options' "$_rustc_opts_link[@]"
+}
+
+_arguments -s :  \
+    '(-W --warn)'{-W,--warn=}'[Set lint warnings]:lint options:_rustc_opts_fun_lint' \
+    '(-A --allow)'{-A,--allow=}'[Set lint allowed]:lint options:_rustc_opts_fun_lint' \
+    '(-D --deny)'{-D,--deny=}'[Set lint denied]:lint options:_rustc_opts_fun_lint' \
+    '(-F --forbid)'{-F,--forbid=}'[Set lint forbidden]:lint options:_rustc_opts_fun_lint' \
+    '*-Z[Set internal debugging options]:debug options:_rustc_opts_fun_debug' \
+    '(-C --codegen)'{-C,--codegen}'[Set internal Codegen options]:codegen options:_rustc_opts_fun_codegen' \
+    '*-l[Link the generated crates to the specified native library NAME. the optional KIND can be one of, static, dylib, or framework. If omitted, dylib is assumed.]:ARG:_rustc_opts_fun_link' \
+    "$_rustc_opts_switches[@]" \
+    "$_rustc_opts_vals[@]" \
+    '::files:_files -g "*.rs"'
diff --git a/completions/_rustup b/completions/_rustup
new file mode 100644
index 0000000..4a84ba9
--- /dev/null
+++ b/completions/_rustup
@@ -0,0 +1,1070 @@
+#compdef rustup
+
+autoload -U is-at-least
+
+_rustup() {
+    typeset -A opt_args
+    typeset -a _arguments_options
+    local ret=1
+
+    if is-at-least 5.2; then
+        _arguments_options=(-s -S -C)
+    else
+        _arguments_options=(-s -C)
+    fi
+
+    local context curcontext="$curcontext" state line
+    _arguments "${_arguments_options[@]}" \
+'-v[Enable verbose output]' \
+'--verbose[Enable verbose output]' \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+":: :_rustup_commands" \
+"*::: :->rustup" \
+&& ret=0
+    case $state in
+    (rustup)
+        words=($line[1] "${words[@]}")
+        (( CURRENT += 1 ))
+        curcontext="${curcontext%:*:*}:rustup-command-$line[1]:"
+        case $line[1] in
+            (show)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+":: :_rustup__show_commands" \
+"*::: :->show" \
+&& ret=0
+case $state in
+    (show)
+        words=($line[1] "${words[@]}")
+        (( CURRENT += 1 ))
+        curcontext="${curcontext%:*:*}:rustup-show-command-$line[1]:"
+        case $line[1] in
+            (active-toolchain)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+&& ret=0
+;;
+(help)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+&& ret=0
+;;
+        esac
+    ;;
+esac
+;;
+(install)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+':toolchain -- Toolchain name, such as 'stable', 'nightly', or '1.8.0'. For more information see `rustup help toolchain`:_files' \
+&& ret=0
+;;
+(uninstall)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+':toolchain -- Toolchain name, such as 'stable', 'nightly', or '1.8.0'. For more information see `rustup help toolchain`:_files' \
+&& ret=0
+;;
+(update)
+_arguments "${_arguments_options[@]}" \
+'--no-self-update[Don'\''t perform self update when running the `rustup` command]' \
+'--force[Force an update, even if some components are missing]' \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+'::toolchain -- Toolchain name, such as 'stable', 'nightly', or '1.8.0'. For more information see `rustup help toolchain`:_files' \
+&& ret=0
+;;
+(default)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+':toolchain -- Toolchain name, such as 'stable', 'nightly', or '1.8.0'. For more information see `rustup help toolchain`:_files' \
+&& ret=0
+;;
+(toolchain)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+":: :_rustup__toolchain_commands" \
+"*::: :->toolchain" \
+&& ret=0
+case $state in
+    (toolchain)
+        words=($line[1] "${words[@]}")
+        (( CURRENT += 1 ))
+        curcontext="${curcontext%:*:*}:rustup-toolchain-command-$line[1]:"
+        case $line[1] in
+            (list)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+&& ret=0
+;;
+(update)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+':toolchain -- Toolchain name, such as 'stable', 'nightly', or '1.8.0'. For more information see `rustup help toolchain`:_files' \
+&& ret=0
+;;
+(add)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+':toolchain -- Toolchain name, such as 'stable', 'nightly', or '1.8.0'. For more information see `rustup help toolchain`:_files' \
+&& ret=0
+;;
+(install)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+':toolchain -- Toolchain name, such as 'stable', 'nightly', or '1.8.0'. For more information see `rustup help toolchain`:_files' \
+&& ret=0
+;;
+(remove)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+':toolchain -- Toolchain name, such as 'stable', 'nightly', or '1.8.0'. For more information see `rustup help toolchain`:_files' \
+&& ret=0
+;;
+(uninstall)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+':toolchain -- Toolchain name, such as 'stable', 'nightly', or '1.8.0'. For more information see `rustup help toolchain`:_files' \
+&& ret=0
+;;
+(link)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+':toolchain -- Toolchain name, such as 'stable', 'nightly', or '1.8.0'. For more information see `rustup help toolchain`:_files' \
+':path:_files' \
+&& ret=0
+;;
+(help)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+&& ret=0
+;;
+        esac
+    ;;
+esac
+;;
+(target)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+":: :_rustup__target_commands" \
+"*::: :->target" \
+&& ret=0
+case $state in
+    (target)
+        words=($line[1] "${words[@]}")
+        (( CURRENT += 1 ))
+        curcontext="${curcontext%:*:*}:rustup-target-command-$line[1]:"
+        case $line[1] in
+            (list)
+_arguments "${_arguments_options[@]}" \
+'--toolchain=[Toolchain name, such as '\''stable'\'', '\''nightly'\'', or '\''1.8.0'\''. For more information see `rustup help toolchain`]' \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+&& ret=0
+;;
+(install)
+_arguments "${_arguments_options[@]}" \
+'--toolchain=[Toolchain name, such as '\''stable'\'', '\''nightly'\'', or '\''1.8.0'\''. For more information see `rustup help toolchain`]' \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+':target:_files' \
+&& ret=0
+;;
+(add)
+_arguments "${_arguments_options[@]}" \
+'--toolchain=[Toolchain name, such as '\''stable'\'', '\''nightly'\'', or '\''1.8.0'\''. For more information see `rustup help toolchain`]' \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+':target:_files' \
+&& ret=0
+;;
+(uninstall)
+_arguments "${_arguments_options[@]}" \
+'--toolchain=[Toolchain name, such as '\''stable'\'', '\''nightly'\'', or '\''1.8.0'\''. For more information see `rustup help toolchain`]' \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+':target:_files' \
+&& ret=0
+;;
+(remove)
+_arguments "${_arguments_options[@]}" \
+'--toolchain=[Toolchain name, such as '\''stable'\'', '\''nightly'\'', or '\''1.8.0'\''. For more information see `rustup help toolchain`]' \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+':target:_files' \
+&& ret=0
+;;
+(help)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+&& ret=0
+;;
+        esac
+    ;;
+esac
+;;
+(component)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+":: :_rustup__component_commands" \
+"*::: :->component" \
+&& ret=0
+case $state in
+    (component)
+        words=($line[1] "${words[@]}")
+        (( CURRENT += 1 ))
+        curcontext="${curcontext%:*:*}:rustup-component-command-$line[1]:"
+        case $line[1] in
+            (list)
+_arguments "${_arguments_options[@]}" \
+'--toolchain=[Toolchain name, such as '\''stable'\'', '\''nightly'\'', or '\''1.8.0'\''. For more information see `rustup help toolchain`]' \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+&& ret=0
+;;
+(add)
+_arguments "${_arguments_options[@]}" \
+'--toolchain=[Toolchain name, such as '\''stable'\'', '\''nightly'\'', or '\''1.8.0'\''. For more information see `rustup help toolchain`]' \
+'--target=[]' \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+':component:_files' \
+&& ret=0
+;;
+(remove)
+_arguments "${_arguments_options[@]}" \
+'--toolchain=[Toolchain name, such as '\''stable'\'', '\''nightly'\'', or '\''1.8.0'\''. For more information see `rustup help toolchain`]' \
+'--target=[]' \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+':component:_files' \
+&& ret=0
+;;
+(help)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+&& ret=0
+;;
+        esac
+    ;;
+esac
+;;
+(override)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+":: :_rustup__override_commands" \
+"*::: :->override" \
+&& ret=0
+case $state in
+    (override)
+        words=($line[1] "${words[@]}")
+        (( CURRENT += 1 ))
+        curcontext="${curcontext%:*:*}:rustup-override-command-$line[1]:"
+        case $line[1] in
+            (list)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+&& ret=0
+;;
+(add)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+':toolchain -- Toolchain name, such as 'stable', 'nightly', or '1.8.0'. For more information see `rustup help toolchain`:_files' \
+&& ret=0
+;;
+(set)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+':toolchain -- Toolchain name, such as 'stable', 'nightly', or '1.8.0'. For more information see `rustup help toolchain`:_files' \
+&& ret=0
+;;
+(remove)
+_arguments "${_arguments_options[@]}" \
+'--path=[Path to the directory]' \
+'--nonexistent[Remove override toolchain for all nonexistent directories]' \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+&& ret=0
+;;
+(unset)
+_arguments "${_arguments_options[@]}" \
+'--path=[Path to the directory]' \
+'--nonexistent[Remove override toolchain for all nonexistent directories]' \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+&& ret=0
+;;
+(help)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+&& ret=0
+;;
+        esac
+    ;;
+esac
+;;
+(run)
+_arguments "${_arguments_options[@]}" \
+'--install[Install the requested toolchain if needed]' \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+':toolchain -- Toolchain name, such as 'stable', 'nightly', or '1.8.0'. For more information see `rustup help toolchain`:_files' \
+':command:_files' \
+&& ret=0
+;;
+(which)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+':command:_files' \
+&& ret=0
+;;
+(docs)
+_arguments "${_arguments_options[@]}" \
+'--path[Only print the path to the documentation]' \
+'--book[The Rust Programming Language book]' \
+'--std[Standard library API documentation]' \
+'--reference[The Rust Reference]' \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+&& ret=0
+;;
+(doc)
+_arguments "${_arguments_options[@]}" \
+'--path[Only print the path to the documentation]' \
+'--book[The Rust Programming Language book]' \
+'--std[Standard library API documentation]' \
+'--reference[The Rust Reference]' \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+&& ret=0
+;;
+(man)
+_arguments "${_arguments_options[@]}" \
+'--toolchain=[Toolchain name, such as '\''stable'\'', '\''nightly'\'', or '\''1.8.0'\''. For more information see `rustup help toolchain`]' \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+':command:_files' \
+&& ret=0
+;;
+(self)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+":: :_rustup__self_commands" \
+"*::: :->self" \
+&& ret=0
+case $state in
+    (self)
+        words=($line[1] "${words[@]}")
+        (( CURRENT += 1 ))
+        curcontext="${curcontext%:*:*}:rustup-self-command-$line[1]:"
+        case $line[1] in
+            (update)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+&& ret=0
+;;
+(uninstall)
+_arguments "${_arguments_options[@]}" \
+'-y[]' \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+&& ret=0
+;;
+(upgrade-data)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+&& ret=0
+;;
+(help)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+&& ret=0
+;;
+        esac
+    ;;
+esac
+;;
+(telemetry)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+":: :_rustup__telemetry_commands" \
+"*::: :->telemetry" \
+&& ret=0
+case $state in
+    (telemetry)
+        words=($line[1] "${words[@]}")
+        (( CURRENT += 1 ))
+        curcontext="${curcontext%:*:*}:rustup-telemetry-command-$line[1]:"
+        case $line[1] in
+            (enable)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+&& ret=0
+;;
+(disable)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+&& ret=0
+;;
+(analyze)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+&& ret=0
+;;
+(help)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+&& ret=0
+;;
+        esac
+    ;;
+esac
+;;
+(set)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+":: :_rustup__set_commands" \
+"*::: :->set" \
+&& ret=0
+case $state in
+    (set)
+        words=($line[1] "${words[@]}")
+        (( CURRENT += 1 ))
+        curcontext="${curcontext%:*:*}:rustup-set-command-$line[1]:"
+        case $line[1] in
+            (default-host)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+':host_triple:_files' \
+&& ret=0
+;;
+(help)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+&& ret=0
+;;
+        esac
+    ;;
+esac
+;;
+(completions)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+'::shell:(zsh bash fish powershell elvish)' \
+&& ret=0
+;;
+(help)
+_arguments "${_arguments_options[@]}" \
+'-h[Prints help information]' \
+'--help[Prints help information]' \
+'-V[Prints version information]' \
+'--version[Prints version information]' \
+&& ret=0
+;;
+        esac
+    ;;
+esac
+}
+
+(( $+functions[_rustup_commands] )) ||
+_rustup_commands() {
+    local commands; commands=(
+        "show:Show the active and installed toolchains" \
+"install:Update Rust toolchains" \
+"uninstall:Uninstall Rust toolchains" \
+"update:Update Rust toolchains and rustup" \
+"default:Set the default toolchain" \
+"toolchain:Modify or query the installed toolchains" \
+"target:Modify a toolchain's supported targets" \
+"component:Modify a toolchain's installed components" \
+"override:Modify directory toolchain overrides" \
+"run:Run a command with an environment configured for a given toolchain" \
+"which:Display which binary will be run for a given command" \
+"doc:Open the documentation for the current toolchain" \
+"man:View the man page for a given command" \
+"self:Modify the rustup installation" \
+"telemetry:rustup telemetry commands" \
+"set:Alter rustup settings" \
+"completions:Generate completion scripts for your shell" \
+"help:Prints this message or the help of the given subcommand(s)" \
+    )
+    _describe -t commands 'rustup commands' commands "$@"
+}
+(( $+functions[_rustup__show__active-toolchain_commands] )) ||
+_rustup__show__active-toolchain_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup show active-toolchain commands' commands "$@"
+}
+(( $+functions[_rustup__add_commands] )) ||
+_rustup__add_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup add commands' commands "$@"
+}
+(( $+functions[_rustup__component__add_commands] )) ||
+_rustup__component__add_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup component add commands' commands "$@"
+}
+(( $+functions[_rustup__override__add_commands] )) ||
+_rustup__override__add_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup override add commands' commands "$@"
+}
+(( $+functions[_rustup__target__add_commands] )) ||
+_rustup__target__add_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup target add commands' commands "$@"
+}
+(( $+functions[_rustup__toolchain__add_commands] )) ||
+_rustup__toolchain__add_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup toolchain add commands' commands "$@"
+}
+(( $+functions[_rustup__telemetry__analyze_commands] )) ||
+_rustup__telemetry__analyze_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup telemetry analyze commands' commands "$@"
+}
+(( $+functions[_rustup__completions_commands] )) ||
+_rustup__completions_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup completions commands' commands "$@"
+}
+(( $+functions[_rustup__component_commands] )) ||
+_rustup__component_commands() {
+    local commands; commands=(
+        "list:List installed and available components" \
+"add:Add a component to a Rust toolchain" \
+"remove:Remove a component from a Rust toolchain" \
+"help:Prints this message or the help of the given subcommand(s)" \
+    )
+    _describe -t commands 'rustup component commands' commands "$@"
+}
+(( $+functions[_rustup__default_commands] )) ||
+_rustup__default_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup default commands' commands "$@"
+}
+(( $+functions[_rustup__set__default-host_commands] )) ||
+_rustup__set__default-host_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup set default-host commands' commands "$@"
+}
+(( $+functions[_rustup__telemetry__disable_commands] )) ||
+_rustup__telemetry__disable_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup telemetry disable commands' commands "$@"
+}
+(( $+functions[_rustup__doc_commands] )) ||
+_rustup__doc_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup doc commands' commands "$@"
+}
+(( $+functions[_docs_commands] )) ||
+_docs_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'docs commands' commands "$@"
+}
+(( $+functions[_rustup__docs_commands] )) ||
+_rustup__docs_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup docs commands' commands "$@"
+}
+(( $+functions[_rustup__telemetry__enable_commands] )) ||
+_rustup__telemetry__enable_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup telemetry enable commands' commands "$@"
+}
+(( $+functions[_rustup__component__help_commands] )) ||
+_rustup__component__help_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup component help commands' commands "$@"
+}
+(( $+functions[_rustup__help_commands] )) ||
+_rustup__help_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup help commands' commands "$@"
+}
+(( $+functions[_rustup__override__help_commands] )) ||
+_rustup__override__help_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup override help commands' commands "$@"
+}
+(( $+functions[_rustup__self__help_commands] )) ||
+_rustup__self__help_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup self help commands' commands "$@"
+}
+(( $+functions[_rustup__set__help_commands] )) ||
+_rustup__set__help_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup set help commands' commands "$@"
+}
+(( $+functions[_rustup__show__help_commands] )) ||
+_rustup__show__help_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup show help commands' commands "$@"
+}
+(( $+functions[_rustup__target__help_commands] )) ||
+_rustup__target__help_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup target help commands' commands "$@"
+}
+(( $+functions[_rustup__telemetry__help_commands] )) ||
+_rustup__telemetry__help_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup telemetry help commands' commands "$@"
+}
+(( $+functions[_rustup__toolchain__help_commands] )) ||
+_rustup__toolchain__help_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup toolchain help commands' commands "$@"
+}
+(( $+functions[_rustup__install_commands] )) ||
+_rustup__install_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup install commands' commands "$@"
+}
+(( $+functions[_rustup__target__install_commands] )) ||
+_rustup__target__install_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup target install commands' commands "$@"
+}
+(( $+functions[_rustup__toolchain__install_commands] )) ||
+_rustup__toolchain__install_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup toolchain install commands' commands "$@"
+}
+(( $+functions[_rustup__toolchain__link_commands] )) ||
+_rustup__toolchain__link_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup toolchain link commands' commands "$@"
+}
+(( $+functions[_rustup__component__list_commands] )) ||
+_rustup__component__list_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup component list commands' commands "$@"
+}
+(( $+functions[_rustup__override__list_commands] )) ||
+_rustup__override__list_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup override list commands' commands "$@"
+}
+(( $+functions[_rustup__target__list_commands] )) ||
+_rustup__target__list_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup target list commands' commands "$@"
+}
+(( $+functions[_rustup__toolchain__list_commands] )) ||
+_rustup__toolchain__list_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup toolchain list commands' commands "$@"
+}
+(( $+functions[_rustup__man_commands] )) ||
+_rustup__man_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup man commands' commands "$@"
+}
+(( $+functions[_rustup__override_commands] )) ||
+_rustup__override_commands() {
+    local commands; commands=(
+        "list:List directory toolchain overrides" \
+"set:Set the override toolchain for a directory" \
+"unset:Remove the override toolchain for a directory" \
+"help:Prints this message or the help of the given subcommand(s)" \
+    )
+    _describe -t commands 'rustup override commands' commands "$@"
+}
+(( $+functions[_rustup__component__remove_commands] )) ||
+_rustup__component__remove_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup component remove commands' commands "$@"
+}
+(( $+functions[_rustup__override__remove_commands] )) ||
+_rustup__override__remove_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup override remove commands' commands "$@"
+}
+(( $+functions[_rustup__remove_commands] )) ||
+_rustup__remove_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup remove commands' commands "$@"
+}
+(( $+functions[_rustup__target__remove_commands] )) ||
+_rustup__target__remove_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup target remove commands' commands "$@"
+}
+(( $+functions[_rustup__toolchain__remove_commands] )) ||
+_rustup__toolchain__remove_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup toolchain remove commands' commands "$@"
+}
+(( $+functions[_rustup__run_commands] )) ||
+_rustup__run_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup run commands' commands "$@"
+}
+(( $+functions[_rustup__self_commands] )) ||
+_rustup__self_commands() {
+    local commands; commands=(
+        "update:Download and install updates to rustup" \
+"uninstall:Uninstall rustup." \
+"upgrade-data:Upgrade the internal data format." \
+"help:Prints this message or the help of the given subcommand(s)" \
+    )
+    _describe -t commands 'rustup self commands' commands "$@"
+}
+(( $+functions[_rustup__override__set_commands] )) ||
+_rustup__override__set_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup override set commands' commands "$@"
+}
+(( $+functions[_rustup__set_commands] )) ||
+_rustup__set_commands() {
+    local commands; commands=(
+        "default-host:The triple used to identify toolchains when not specified" \
+"help:Prints this message or the help of the given subcommand(s)" \
+    )
+    _describe -t commands 'rustup set commands' commands "$@"
+}
+(( $+functions[_rustup__show_commands] )) ||
+_rustup__show_commands() {
+    local commands; commands=(
+        "active-toolchain:Show the active toolchain" \
+"help:Prints this message or the help of the given subcommand(s)" \
+    )
+    _describe -t commands 'rustup show commands' commands "$@"
+}
+(( $+functions[_rustup__target_commands] )) ||
+_rustup__target_commands() {
+    local commands; commands=(
+        "list:List installed and available targets" \
+"add:Add a target to a Rust toolchain" \
+"remove:Remove a target from a Rust toolchain" \
+"help:Prints this message or the help of the given subcommand(s)" \
+    )
+    _describe -t commands 'rustup target commands' commands "$@"
+}
+(( $+functions[_rustup__telemetry_commands] )) ||
+_rustup__telemetry_commands() {
+    local commands; commands=(
+        "enable:Enable rustup telemetry" \
+"disable:Disable rustup telemetry" \
+"analyze:Analyze stored telemetry" \
+"help:Prints this message or the help of the given subcommand(s)" \
+    )
+    _describe -t commands 'rustup telemetry commands' commands "$@"
+}
+(( $+functions[_rustup__toolchain_commands] )) ||
+_rustup__toolchain_commands() {
+    local commands; commands=(
+        "list:List installed toolchains" \
+"install:Install or update a given toolchain" \
+"uninstall:Uninstall a toolchain" \
+"link:Create a custom toolchain by symlinking to a directory" \
+"help:Prints this message or the help of the given subcommand(s)" \
+    )
+    _describe -t commands 'rustup toolchain commands' commands "$@"
+}
+(( $+functions[_rustup__self__uninstall_commands] )) ||
+_rustup__self__uninstall_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup self uninstall commands' commands "$@"
+}
+(( $+functions[_rustup__target__uninstall_commands] )) ||
+_rustup__target__uninstall_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup target uninstall commands' commands "$@"
+}
+(( $+functions[_rustup__toolchain__uninstall_commands] )) ||
+_rustup__toolchain__uninstall_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup toolchain uninstall commands' commands "$@"
+}
+(( $+functions[_rustup__uninstall_commands] )) ||
+_rustup__uninstall_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup uninstall commands' commands "$@"
+}
+(( $+functions[_rustup__override__unset_commands] )) ||
+_rustup__override__unset_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup override unset commands' commands "$@"
+}
+(( $+functions[_rustup__self__update_commands] )) ||
+_rustup__self__update_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup self update commands' commands "$@"
+}
+(( $+functions[_rustup__toolchain__update_commands] )) ||
+_rustup__toolchain__update_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup toolchain update commands' commands "$@"
+}
+(( $+functions[_rustup__update_commands] )) ||
+_rustup__update_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup update commands' commands "$@"
+}
+(( $+functions[_rustup__self__upgrade-data_commands] )) ||
+_rustup__self__upgrade-data_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup self upgrade-data commands' commands "$@"
+}
+(( $+functions[_rustup__which_commands] )) ||
+_rustup__which_commands() {
+    local commands; commands=(
+        
+    )
+    _describe -t commands 'rustup which commands' commands "$@"
+}
+
+_rustup "$@"
\ No newline at end of file
diff --git a/lib/path.zsh b/lib/path.zsh
index b2c0ba7..2c742d6 100644
--- a/lib/path.zsh
+++ b/lib/path.zsh
@@ -1,27 +1,31 @@
 #!/usr/bin/env zsh
 
-prepend() { eval "export $1=\"$2:\$$1\""; }
-append()  { eval "export $1=\"\$$1:$2\""; }
+arr_push() { eval "export $1=\"$2:\$$1\""; }
 
 # user binaries
-append PATH "$HOME/bin"
-append PATH "$HOME/.local/bin"
+arr_push PATH "$HOME/bin"
+arr_push PATH "$HOME/.local/bin"
 # Rust binaries
-prepend PATH "$HOME/.cargo/bin"
+arr_push PATH "$HOME/.cargo/bin"
 # global Yarn packages
-append PATH "$HOME/.config/yarn/global/node_modules/.bin"
+arr_push PATH "$HOME/.config/yarn/global/node_modules/.bin"
 
 if is_macos; then
-  # GNU sed
-  prepend PATH    "/usr/local/opt/gnu-tar/libexec/gnubin"
-  prepend MANPATH "/usr/local/opt/gnu-tar/libexec/gnuman"
-  # GNU tar
-  prepend PATH    "/usr/local/opt/gnu-sed/libexec/gnubin"
-  prepend MANPATH "/usr/local/opt/gnu-sed/libexec/gnuman"
-  # GNU coreutils
-  prepend PATH    "/usr/local/opt/coreutils/libexec/gnubin"
-  prepend MANPATH "/usr/local/opt/coreutils/libexec/gnuman"
   # Haskell packages
-  append PATH "$HOME/Library/Haskell/bin"
+  arr_push PATH "$HOME/Library/Haskell/bin"
+
+  # GNU sed
+  arr_push PATH    "/usr/local/opt/gnu-tar/libexec/gnubin"
+  arr_push MANPATH "/usr/local/opt/gnu-tar/libexec/gnuman"
+  # GNU tar
+  arr_push PATH    "/usr/local/opt/gnu-sed/libexec/gnubin"
+  arr_push MANPATH "/usr/local/opt/gnu-sed/libexec/gnuman"
+  # GNU coreutils
+  arr_push PATH    "/usr/local/opt/coreutils/libexec/gnubin"
+  arr_push MANPATH "/usr/local/opt/coreutils/libexec/gnuman"
 fi
 
+arr_push FPATH "$DOTFILES_PATH/completions"
+command_exists rustc && arr_push FPATH "$(rustc --print sysroot)/share/zsh/site-functions"
+
+unset arr_push