[completion] add ${zcompdump_file} option

This commit assumes that the user-provided variable for the filename
will start with '.zcomp'. This is used in the .zlogin for zcompiling the
completion file. Sourcing the .zimrc file within the .zlogin file is
something I'd rather not do, and this seems like a good compromise. If
this becomes an issue, the file can be sourced an the var can be used
instead.

Closes #42

modules/completion/init.zsh

@@ -16,7 +16,7 @@ fi
 fpath=(${0:h}/external/src ${fpath})
 
 # load and initialize the completion system
-autoload -Uz compinit && compinit -C -d ${ZDOTDIR:-${HOME}}/.zcompdump
+autoload -Uz compinit && compinit -C -d "${ZDOTDIR:-${HOME}}/${zcompdump_file:-.zcompdump}"
 
 # set any compdefs
 source ${0:h}/compdefs.zsh

templates/zimrc

@@ -24,6 +24,14 @@ zmodules=(directory environment git history input utility custom \
 # Set your desired prompt here
 zprompt_theme='steeef'
 
+#
+# Completion
+#
+
+# set an optional host-specific filename for the completion cache file
+# if none is provided, the default '.zcompdump' is used.
+#zcompdump_file=".zcompdump-${HOST}-${ZSH_VERSION}"
+
 #
 # Utility
 #

templates/zlogin

@@ -19,7 +19,9 @@
   setopt EXTENDED_GLOB
 
   # zcompile the completion cache; siginificant speedup.
-  zcompare ${ZDOTDIR:-${HOME}}/.zcompdump
+  for file in ${ZDOTDIR:-${HOME}}/.zcomp^(*.zwc)(.); do
+    zcompare ${file}
+  done
 
   # zcompile .zshrc
   zcompare ${ZDOTDIR:-${HOME}}/.zshrc