[zsh] carefully rewrite all prints to not produce escape sequences

install.zsh

@@ -11,8 +11,8 @@ install_dotfile() {
   fi
 
   mkdir -pv "${dest:h}"
-  echo "installing dotfile '$dest'"
-  echo "$contents" > "$dest"
+  print -r -- "installing dotfile '$dest'"
+  print -r -- "$contents" > "$dest"
 }
 
 # ZSH

zsh/aliases.zsh

@@ -77,7 +77,7 @@ alias free='free -h'
 if command_exists apt && command_exists apt-get; then
   apt_get_message="use 'apt' instead of 'apt-get'
 if you really want to use 'apt-get', type '\\apt-get'"
-  alias apt-get="echo -E ${(qqq)apt_get_message} #"
+  alias apt-get="print -r -- ${(qqq)apt_get_message} #"
   unset apt_get_message
 fi
 

zsh/completion.zsh

@@ -39,11 +39,11 @@ zstyle ':completion:*:processes-names' command "ps xho comm="
 zstyle ':completion:*:processes' force-list always
 
 _completion_get_hosts() {
-  print localhost
+  print -r -- localhost
   local line
   < ~/.ssh/config while IFS= read -r line; do
     if [[ "$line" =~ '^Host[[:blank:]]+(.*)[[:blank:]]*' ]]; then
-      print -- "${match[1]}"
+      print -r -- "${match[1]}"
     fi
   done
 }

zsh/functions.zsh

@@ -1,6 +1,6 @@
 #!/usr/bin/env zsh
 
-count() { echo "$#"; }
+count() { print -r -- "$#"; }
 
 bytecount() { wc -c "$@" | numfmt --to=iec-i; }
 
@@ -39,7 +39,7 @@ if (( ! _is_macos )); then
   elif command_exists xdg-open; then
     open_cmd='nohup xdg-open &> /dev/null'
   else
-    open_cmd='print >&2 "open: Platform $OSTYPE is not supported"; return 1'
+    open_cmd='print >&2 -r -- "open: Platform $OSTYPE is not supported"; return 1'
   fi
   eval "open(){local f; for f in \"\$@\"; do $open_cmd \"\$f\"; done;}"
   unset open_cmd
@@ -55,8 +55,8 @@ elif command_exists termux-clipboard-set && command_exists termux-clipboard-get;
   copy_cmd='termux-clipboard-set' paste_cmd='termux-clipboard-get'
 else
   error_msg='Platform $OSTYPE is not supported'
-  copy_cmd='print >&2 "clipcopy: '"$error_msg"'"; return 1'
-  paste_cmd='print >&2 "clippaste: '"$error_msg"'"; return 1'
+  copy_cmd='print >&2 -r -- "clipcopy: '"$error_msg"'"; return 1'
+  paste_cmd='print >&2 -r -- "clippaste: '"$error_msg"'"; return 1'
   unset error_msg
 fi
 eval "clipcopy() { $copy_cmd; }; clippaste() { $paste_cmd; }"
@@ -74,7 +74,7 @@ git_current_branch() {
     command git symbolic-ref --quiet HEAD 2> /dev/null ||
     command git rev-parse --short HEAD 2> /dev/null
   )" || return
-  echo "${ref#refs/heads/}"
+  print -r -- "${ref#refs/heads/}"
 }
 
 declare -A date_formats=(

zsh/path.zsh

@@ -9,7 +9,7 @@ export -T LD_LIBRARY_PATH ld_library_path ':'
 
 path_prepend() {
   if (( $# < 1 )); then
-    print >&2 "usage: $0 <var_name> <value...>"
+    print >&2 -r -- "usage: $0 <var_name> <value...>"
     return 1
   fi
   local var_name="$1"; shift

zsh/plugins.zsh

@@ -34,7 +34,7 @@ _plugin completions 'zsh-users/zsh-completions' "$_checkout_latest_version"
   done; unset match
 
   if (( $run_compdump )); then
-    echo "$0: rebuilding zsh completion dump"
+    print -r -- "$0: rebuilding zsh completion dump"
     # -D flag turns off compdump loading
     compinit -D
     compdump
@@ -98,7 +98,7 @@ _plugin completions 'zsh-users/zsh-completions' "$_checkout_latest_version"
       if [[ -d "$_fasd_ret" ]]; then
         cd -- "$_fasd_ret"
       elif [[ -n "$_fasd_ret" ]]; then
-        print -- "$_fasd_ret"
+        print -r -- "$_fasd_ret"
       fi
     }
   fi

zsh/prompt.zsh

@@ -3,7 +3,7 @@
 # Escapes `%` in all arguments by replacing it with `%%`. Escaping is needed so
 # that untrusted input (e.g. git branch names) doesn't affect prompt rendering.
 prompt_escape() {
-  print -n "${@//\%/%%}"
+  print -rn -- "${@//\%/%%}"
 }
 
 prompt_preexec_hook() {
@@ -51,7 +51,7 @@ prompt_vcs_info() {
     fi
   done
 
-  print -n ' %F{blue}git:%F{magenta}'"$(prompt_escape "$branch")"'%f'
+  print -rn -- ' %F{blue}git:%F{magenta}'"$(prompt_escape "$branch")"'%f'
 }
 
 # configure prompt expansion

zsh/zle.zsh

@@ -60,9 +60,9 @@
   _palette_widget() {
     # download "TLDR pages" if we don't have them
     if [[ ! -d "$PALETTE_TLDR_PAGES_DIR" ]]; then
-      echo
+      print -r
       _palette_download_tldr_pages
-      echo
+      print -r
     fi
 
     # try to fill in a placeholder if there're any, otherwise pick a snippet
@@ -118,12 +118,12 @@
   # This function downloads the "TLDR pages"
   _palette_download_tldr_pages() {
     mkdir -pv "$PALETTE_TLDR_PAGES_DIR"
-    echo "Downloading tldr pages..."
+    print -r -- "Downloading tldr pages..."
 
     if curl -Lf https://github.com/tldr-pages/tldr/archive/master.tar.gz |
       tar -C "$PALETTE_TLDR_PAGES_DIR" --gzip --strip-components 2 --extract tldr-master/pages
     then
-      echo "Done!"
+      print -r -- "Done!"
     fi
   }
 

zsh/zplg.zsh

@@ -51,7 +51,7 @@ _ZPLG_PLUGINS_DIR="$ZPLG_HOME/plugins"
 # basic logging {{{
 
   _zplg_log() {
-    print >&2 "${fg_bold[blue]}[zplg]${reset_color} $@"
+    print >&2 -r -- "${fg_bold[blue]}[zplg]${reset_color} $@"
   }
 
   _zplg_debug() {
@@ -455,7 +455,7 @@ _zplg_is_plugin_loaded() {
   # Prints IDs of all loaded plugins.
   zplg-list() {
     # (F) modifier joins an array with newlines
-    print "${(F)ZPLG_LOADED_PLUGINS}"
+    print -r -- "${(F)ZPLG_LOADED_PLUGINS}"
   }
 
   # Upgrades all plugins if no arguments are given, otherwise upgrades plugins by