feat(init): at no point are the user temp files missing...

Previously initialization started with removing the regular and global
user abbreviations temp files. They were recreated with fresh data at the end
of initialization. In the interim, other sessions would not be able to source
the temp files.

Now rather than delete and recreate the files, they are overwritten at the end
of initialization.

zsh-abbr.zsh

@@ -43,6 +43,7 @@ _zsh_abbr() {
 
       abbreviation=${1%%=*}
       expansion=${1#*=}
+
       if ! (( ZSH_ABBR_INITIALIZING )); then
         abbreviation=${(q)abbreviation}
         expansion=${(q)expansion}
@@ -104,7 +105,9 @@ _zsh_abbr() {
 
       if [[ $scope != 'session' ]]; then
         if [[ $type != 'regular' ]]; then
-          source "${TMPDIR:-/tmp/}zsh-abbr/global-user-abbreviations"
+          if ! (( ZSH_ABBR_INITIALIZING )); then
+            source "${TMPDIR:-/tmp/}zsh-abbr/global-user-abbreviations"
+          fi
 
           if (( ${+GLOBAL_USER_ABBREVIATIONS[$abbreviation]} )); then
             (( ZSH_ABBR_DEBUG )) && echo "  Found a global user abbreviation"
@@ -113,7 +116,9 @@ _zsh_abbr() {
         fi
 
         if [[ $type != 'global' ]]; then
-          source "${TMPDIR:-/tmp/}zsh-abbr/regular-user-abbreviations"
+          if ! (( ZSH_ABBR_INITIALIZING )); then
+            source "${TMPDIR:-/tmp/}zsh-abbr/regular-user-abbreviations"
+          fi
 
           if (( ${+REGULAR_USER_ABBREVIATIONS[$abbreviation]} )); then
             (( ZSH_ABBR_DEBUG )) && echo "  Found a regular user abbreviation"
@@ -402,7 +407,9 @@ _zsh_abbr() {
         fi
       else
         if [[ $type == 'global' ]]; then
-          source ${TMPDIR:-/tmp/}zsh-abbr/global-user-abbreviations
+          if ! (( ZSH_ABBR_INITIALIZING )); then
+            source ${TMPDIR:-/tmp/}zsh-abbr/global-user-abbreviations
+          fi
 
           if ! (( ${+GLOBAL_USER_ABBREVIATIONS[$abbreviation]} )); then
             if (( dry_run )); then
@@ -414,7 +421,9 @@ _zsh_abbr() {
             success=1
           fi
         else
-          source ${TMPDIR:-/tmp/}zsh-abbr/regular-user-abbreviations
+          if ! (( ZSH_ABBR_INITIALIZING )); then
+            source ${TMPDIR:-/tmp/}zsh-abbr/regular-user-abbreviations
+          fi
 
           if ! (( ${+REGULAR_USER_ABBREVIATIONS[$abbreviation]} )); then
             if (( dry_run )); then
@@ -814,35 +823,30 @@ _zsh_abbr_init() {
     job=$(_zsh_abbr_job_name)
     shwordsplit_on=0
 
+    if ! [ -f ${TMPDIR:-/tmp/}zsh-abbr/regular-user-abbreviations ]; then
+      touch ${TMPDIR:-/tmp/}zsh-abbr/regular-user-abbreviations
+    fi
+
+    if ! [ -f ${TMPDIR:-/tmp/}zsh-abbr/global-user-abbreviations ]; then
+      touch ${TMPDIR:-/tmp/}zsh-abbr/global-user-abbreviations
+    fi
+
     typeset -gA REGULAR_USER_ABBREVIATIONS
-    typeset -gA REGULAR_SESSION_ABBREVIATIONS
     typeset -gA GLOBAL_USER_ABBREVIATIONS
+    typeset -gA REGULAR_SESSION_ABBREVIATIONS
     typeset -gA GLOBAL_SESSION_ABBREVIATIONS
-    REGULAR_USER_ABBREVIATIONS=()
     REGULAR_SESSION_ABBREVIATIONS=()
-    GLOBAL_USER_ABBREVIATIONS=()
     GLOBAL_SESSION_ABBREVIATIONS=()
+    REGULAR_USER_ABBREVIATIONS=()
+    GLOBAL_USER_ABBREVIATIONS=()
 
     function _zsh_abbr_init:configure() {
       (( ZSH_ABBR_DEBUG )) && echo "_zsh_abbr_init:configure"
 
       mkdir -p ${TMPDIR:-/tmp/}zsh-abbr
 
-      if [ -f ${TMPDIR:-/tmp/}zsh-abbr/regular-user-abbreviations ]; then
-        rm ${TMPDIR:-/tmp/}zsh-abbr/regular-user-abbreviations
-      fi
-
-      if [ -f ${TMPDIR:-/tmp/}zsh-abbr/global-user-abbreviations ]; then
-        rm ${TMPDIR:-/tmp/}zsh-abbr/global-user-abbreviations
-      fi
-
-      touch ${TMPDIR:-/tmp/}zsh-abbr/regular-user-abbreviations
-      chmod 600 ${TMPDIR:-/tmp/}zsh-abbr/regular-user-abbreviations
-
-      touch ${TMPDIR:-/tmp/}zsh-abbr/global-user-abbreviations
-      chmod 600 ${TMPDIR:-/tmp/}zsh-abbr/global-user-abbreviations
-
       # clean up deprecated temp files
+
       if [ -d ${TMPDIR:-/tmp/}zsh-abbr-jobs ]; then
         rm -rf ${TMPDIR:-/tmp/}zsh-abbr-jobs 2> /dev/null
       fi