Generate .zimrc if not found

This hopefully makes installation easier. Also, command line tools
usually create a default config file when it's missing, so this should
me a familiar behavior to command line users.
Leaving zsh-history-substring-search commented because it does not work
out of the box and unfortunately needs to be manually configured.

src/stage2/31_zimfw_source_zimrc.zsh.erb

@@ -3,6 +3,11 @@ _zimfw_source_zimrc() {
   {
     local -ri _zeager=${1}
     local -i _zfailed=0
+    if [[ ! -e ${_zconfig} ]]; then
+      _zimfw_print -u2 "${_zyellow}Config file not found, will create ${_zbold}${_zconfig}${_znormal}"
+      command mkdir -p ${_zconfig:h} || return 1
+      print -R "<%= render_template("src/templates/zimrc") %>" >${_zconfig} || return 1
+    fi
     if ! source ${_zconfig} || (( _zfailed )); then
       print -u2 -R "${_zred}Failed to source ${_zbold}${_zconfig}${_znormal}"
       return 1

src/templates/zimrc

@@ -0,0 +1,52 @@
+#
+# This is not sourced during shell startup and it's only used to configure zimfw
+#
+
+#
+# Modules
+#
+
+# Sets sane Zsh built-in environment options.
+zmodule environment
+# Provides handy git aliases and functions.
+zmodule git
+# Applies correct bindkeys for input events.
+zmodule input
+# Sets a custom terminal title.
+zmodule termtitle
+# Utility aliases and functions. Adds colour to ls, grep and less.
+zmodule utility
+
+#
+# Prompt
+#
+
+# Exposes to prompts how long the last command took to run, used by asciiship.
+zmodule duration-info
+# Exposes git repository status information to prompts, used by asciiship.
+zmodule git-info
+# A heavily reduced, ASCII-only version of the Spaceship and Starship prompts.
+zmodule asciiship
+
+#
+# Completion
+#
+
+# Additional completion definitions for Zsh.
+zmodule zsh-users/zsh-completions --fpath src
+# Enables and configures smart and extensive tab completion.
+# completion must be sourced after all modules that add completion definitions.
+zmodule completion
+
+#
+# Modules that must be initialized last
+#
+
+# Fish-like syntax highlighting for Zsh.
+# zsh-users/zsh-syntax-highlighting must be sourced after completion
+zmodule zsh-users/zsh-syntax-highlighting
+# Fish-like history search (up arrow) for Zsh.
+# zsh-users/zsh-history-substring-search must be sourced after zsh-users/zsh-syntax-highlighting
+#zmodule zsh-users/zsh-history-substring-search
+# Fish-like autosuggestions for Zsh.
+zmodule zsh-users/zsh-autosuggestions

src/zimfw.zsh.erb

@@ -24,6 +24,12 @@ class Zim
     Dir[pattern].sort.map { |filename| render(filename) }.join("\n")
   end
 
+  def render_template(filename)
+    render(filename)
+      .gsub(/\\/, "\\\\\\\\")
+      .gsub(/(?=\$[^']|"|`)/, "\\\\")
+  end
+
   def render_commented(filename)
     render(filename).gsub(/^(?=.)/, "# ").gsub(/^$/, "#")
   end

zimfw.zsh

@@ -383,6 +383,63 @@ Per-call initialization options:
   {
     local -ri _zeager=${1}
     local -i _zfailed=0
+    if [[ ! -e ${_zconfig} ]]; then
+      _zimfw_print -u2 "${_zyellow}Config file not found, will create ${_zbold}${_zconfig}${_znormal}"
+      command mkdir -p ${_zconfig:h} || return 1
+      print -R "#
+# This is not sourced during shell startup and it's only used to configure zimfw
+#
+
+#
+# Modules
+#
+
+# Sets sane Zsh built-in environment options.
+zmodule environment
+# Provides handy git aliases and functions.
+zmodule git
+# Applies correct bindkeys for input events.
+zmodule input
+# Sets a custom terminal title.
+zmodule termtitle
+# Utility aliases and functions. Adds colour to ls, grep and less.
+zmodule utility
+
+#
+# Prompt
+#
+
+# Exposes to prompts how long the last command took to run, used by asciiship.
+zmodule duration-info
+# Exposes git repository status information to prompts, used by asciiship.
+zmodule git-info
+# A heavily reduced, ASCII-only version of the Spaceship and Starship prompts.
+zmodule asciiship
+
+#
+# Completion
+#
+
+# Additional completion definitions for Zsh.
+zmodule zsh-users/zsh-completions --fpath src
+# Enables and configures smart and extensive tab completion.
+# completion must be sourced after all modules that add completion definitions.
+zmodule completion
+
+#
+# Modules that must be initialized last
+#
+
+# Fish-like syntax highlighting for Zsh.
+# zsh-users/zsh-syntax-highlighting must be sourced after completion
+zmodule zsh-users/zsh-syntax-highlighting
+# Fish-like history search (up arrow) for Zsh.
+# zsh-users/zsh-history-substring-search must be sourced after zsh-users/zsh-syntax-highlighting
+#zmodule zsh-users/zsh-history-substring-search
+# Fish-like autosuggestions for Zsh.
+zmodule zsh-users/zsh-autosuggestions
+" >${_zconfig} || return 1
+    fi
     if ! source ${_zconfig} || (( _zfailed )); then
       print -u2 -R "${_zred}Failed to source ${_zbold}${_zconfig}${_znormal}"
       return 1
@@ -489,7 +546,7 @@ _zimfw_info() {
   _zimfw_info_print_symlink ZIM_HOME ${ZIM_HOME}
   _zimfw_info_print_symlink 'zimfw config' ${_zconfig}
   _zimfw_info_print_symlink 'zimfw script' ${__ZIMFW_FILE}
-  print -R 'zimfw version:        '${_zversion}' (built at 2025-03-20 20:43:33 UTC, previous commit is 7d0a56b)'
+  print -R 'zimfw version:        '${_zversion}' (built at 2025-03-21 12:46:56 UTC, previous commit is 52dd146)'
   local zparam
   for zparam in LANG ${(Mk)parameters:#LC_*} OSTYPE TERM TERM_PROGRAM TERM_PROGRAM_VERSION ZSH_VERSION; do
     print -R ${(r.22....:.)zparam}${(P)zparam}