No more file not found errors during cleanup

Cleanup with "rm $auxfiles" produced error messages for all filetypes
that were not found.
Rewritten as "find ... -exec rm ...",  much neater approach.

chertex.sh

@@ -158,7 +158,7 @@ aux_tikz="*-tikzDictionary"
 aux_tdo="*.tdo"
 aux_toc="*.toc"
 aux_xdy="*.xdy"  # glossaries (xindy)
-# all aux files in a string
+# all aux files in a single string
 auxfiles="${aux_acn} ${aux_acr} ${aux_alg} ${aux_aux} ${aux_bbl} ${aux_blg} ${aux_dep} ${aux_dpth} ${aux_fdb} ${aux_fig} ${aux_fls} ${aux_glg} ${aux_glo} ${aux_gls} ${aux_ist} ${aux_lob} ${aux_lof} ${aux_log} ${aux_lol} ${aux_lor} ${aux_los} ${aux_lot} ${aux_maf} ${aux_out} ${aux_lox} ${aux_make} ${aux_map} ${aux_mtc} ${aux_run} ${aux_slg} ${aux_slo} ${aux_sls} ${aux_stc} ${aux_tikz} ${aux_tdo} ${aux_toc} ${aux_xdy}"
 
 
@@ -365,8 +365,22 @@ else
 	fi
    if [[ $usrchoice == "clean-up" || $usrchoice == "2" ]]; then
       msg "<2> 'clean-up' chosen"
-      rm $auxfiles
-      # Still, a rather crude way of cleaning up...
+      # in $auxfiles, strip "*." or "*" at beginning of each word and "*" at the
+      # end of any word, and replace space between items with pipe symbol
+      # using the built-in bash ${$VAR//find/replace} takes us part-way
+      # $ echo "${auxfiles//\*./}"
+      # acn acr alg aux bbl blg dep dpth fdb* figlist fls glg glo gls* ist lob lof log lol lor los lot maf out lox makefile map mtc* run* slg slo sls stc* *-tikzDictionary tdo toc xdy
+      # https://www.baeldung.com/linux/process-a-bash-variable-with-sed
+      # first, replace "*." or "*-" with empty string, then replace "* " with ".* " (to suit
+      # regex syntax in the subsequent find command), finally replace each inter-word
+      # spaces with pipe symbol. Also, and this is important, "*-tikzDictionary" needs to
+      # be cleaned up otherwise trips up the -iregex parameter! (don't leave "*-" in the string)
+      # https://unix.stackexchange.com/a/15337
+      # $ echo "$auxfiles" | sed -r "s/\*\.//g" | sed -r "s/\* /\.\* /g" | sed -r "s/ /|/g"
+      # acn|acr|alg|aux|bbl|blg|dep|dpth|fdb.*|figlist|fls|glg|glo|gls.*|ist|lob|lof|log|lol|lor|los|lot|maf|out|lox|makefile|map|mtc.*|run.*|slg|slo|sls|stc.*|*-tikzDictionary|tdo|toc|xdy
+      auxregex=$(echo "$auxfiles" | sed -r "s/\*[\.-]//g" | sed -r "s/\* /\.\* /g" | sed -r "s/ /|/g")
+      # "rm -v" provides nice output of which files were cleaned up
+      find "$path_thesis" -maxdepth 1 -type f -regextype posix-extended -iregex ".*\.($auxregex)" -exec rm -v "{}" \;
    fi
    if [[ $usrchoice == "wipe-dir" || $usrchoice == "3" ]]; then
       msg "<3> 'wipe-dir' chosen"