ENH: Allow listpri filtering via TERM.

This even simplified the argument handling, since there can be no invalid priority any more; all other strings are taken as TERMs. And the check for empty ${1:-} was superfluous, anyway. Apart from these simplifications, it's basically just passing $@ to _list.

tests/t1250-listpri.sh

@@ -4,13 +4,6 @@ test_description='list priority functionality
 '
 . ./test-lib.sh
 
-test_todo_session 'listpri usage' <<EOF
->>> todo.sh listpri ?
-usage: todo.sh listpri PRIORITY
-note: PRIORITY must a single letter from A to Z.
-=== 1
-EOF
-
 cat > todo.txt <<EOF
 (B) smell the uppercase Roses +flowers @outside
 (C) notice the sunflowers
@@ -42,7 +35,7 @@ cat > todo.txt <<EOF
 (n) not a prioritized task
 notice the (C)opyright
 EOF
-test_todo_session 'listpri filtering' <<EOF
+test_todo_session 'listpri filtering priorities' <<EOF
 >>> todo.sh -p listpri
 1 (B) smell the uppercase Roses +flowers @outside
 2 (C) notice the sunflowers
@@ -68,4 +61,35 @@ TODO: 0 of 5 tasks shown
 TODO: 0 of 5 tasks shown
 EOF
 
+cat > todo.txt <<EOF
+(B) ccc xxx this line should be third.
+ccc xxx this line should be third.
+(A) aaa zzz this line should be first.
+aaa zzz this line should be first.
+(B) bbb yyy this line should be second.
+bbb yyy this line should be second.
+EOF
+test_todo_session 'listpri filtering of TERM' <<EOF
+>>> todo.sh -p listpri "should be"
+3 (A) aaa zzz this line should be first.
+5 (B) bbb yyy this line should be second.
+1 (B) ccc xxx this line should be third.
+--
+TODO: 3 of 6 tasks shown
+
+>>> todo.sh -p listpri a "should be"
+3 (A) aaa zzz this line should be first.
+--
+TODO: 1 of 6 tasks shown
+
+>>> todo.sh -p listpri b second
+5 (B) bbb yyy this line should be second.
+--
+TODO: 1 of 6 tasks shown
+
+>>> todo.sh -p listpri x "should be"
+--
+TODO: 0 of 6 tasks shown
+EOF
+
 test_done

todo.sh

@@ -58,7 +58,7 @@ shorthelp()
 		    listall|lsa [TERM...]
 		    listcon|lsc
 		    listfile|lf SRC [TERM...]
-		    listpri|lsp [PRIORITY]
+		    listpri|lsp [PRIORITY] [TERM...]
 		    listproj|lsprj
 		    move|mv ITEM# DEST [SRC]
 		    prepend|prep ITEM# "TEXT TO PREPEND"
@@ -143,10 +143,11 @@ help()
 		      sorted by priority with line  numbers.  If TERM specified, lists
 		      all lines that contain TERM in SRC file.
 
-		    listpri [PRIORITY]
+		    listpri [PRIORITY] [TERM...]
-		    lsp [PRIORITY]
+		    lsp [PRIORITY] [TERM...]
 		      Displays all tasks prioritized PRIORITY.
 		      If no PRIORITY specified, lists all prioritized tasks.
+		      If TERM specified, lists only prioritized tasks that contain TERM.
 
 		    listproj
 		    lsprj
@@ -1009,22 +1010,11 @@ case $action in
     ;;
 
 "listpri" | "lsp" )
-    shift ## was "listpri", new $1 is priority to list
+    shift ## was "listpri", new $1 is priority to list or first TERM
-
-    if [ "${1:-}" ]
-    then
-        ## A priority was specified
-        pri=$( printf "%s\n" "$1" | tr 'a-z' 'A-Z' | grep '^[A-Z]$' ) || {
-            die "usage: $TODO_SH listpri PRIORITY
-note: PRIORITY must a single letter from A to Z."
-        }
-    else
-        ## No priority specified; show all priority tasks
-        pri="[A-Z]"
-    fi
 
+    pri=$(printf "%s\n" "$1" | tr 'a-z' 'A-Z' | grep '^[A-Z]$') && shift || pri="[A-Z]"
     post_filter_command="grep '^ *[0-9]\+ (${pri}) '"
-    _list "$TODO_FILE"
+    _list "$TODO_FILE" "$@"
     ;;
 
 "move" | "mv" )