Add mod command to rename a task using either search/replace or sed command

t.sh

@@ -706,6 +706,52 @@ function rename() {  # rename uid new name goes here
     return $rv
 }
 
+function sedmod() {  # sedmod uid 'sed command'
+    local uid sedscript newname sedrv rv file
+    local id
+
+    uid=$1
+    id=$(getid $uid)
+    rv=0
+    shift
+
+    if [[ $# -ge 2 ]]; then
+        sedscript="s/$1/$2/g"
+    else
+        sedscript="$*"
+    fi
+    newname=$(echo "${tasksum[$id]}" | sed "$sedscript" 2>/dev/null )
+    if [[ $? -ne 0 ]]; then
+        error "Invalid sed script:  $BOLD$sedscript"
+        return 1
+    fi
+
+    info "Current name: ${BOLD}${tasksum[$id]}"
+    info "New name:     ${BOLD}${newname}"
+    confirm "Is this correct"
+    if [[ $? -ne 0 ]]; then
+        action "Aborted."
+        return 1
+    fi
+
+    file="$dir/$uid.vcf"
+
+    sed -i "s/^SUMMARY:.*/SUMMARY:$newname/" "$file"
+    sedrv=$?
+    set_lastmodified $uid
+    sedrv=$((sedrv + $?))
+    if [[ $sedrv -eq 0 ]]; then
+        action "Renamed task #${id} to '$newname'."
+        loadtask "$file"
+        rv=0
+    else
+        error "failed to rename task #${id}."
+        rv=1
+    fi
+
+    return $rv
+}
+
 function toggle() {
     local uid id rv children
     uid=$1
@@ -1486,6 +1532,7 @@ addcmd "add" "add [parent] <name>" "Add a new task [as subtask of parent]" "a|ad
 addcmd "del" "del [id1] .. [idX]" "Delete given task(s)" "del|rm|delete"
 addcmd "cleanup" "cleanup" "Delete all completed tasks" "cleanup|clean|flush|dc"
 addcmd "rename" "rename <id> <newname>" "Rename given task" "rename"
+addcmd "mod" "mod <id> (<sed_script>|<lookfor> <replacewith>)" "Rename given task using sed script" "mod|sed"
 addcmd "left" "left <id>" "Decrease indent of given task" "left|h|out|up"
 addcmd "right" "right <id> <parent>" "Move task below the given parent" "right|l|mv|in"
 addcmd "note" "note <id> <notes>" "Change notes for given task" "note|desc|description|comment"
@@ -1658,6 +1705,14 @@ elif [[ $mode == "rename" ]]; then
     uid=$(getuid_witherror $1)
     shift
     rename $uid "$*"
+elif [[ $mode == "mod" ]]; then
+    uid=$(getuid_witherror $1)
+    shift
+    if [[ $# -ge 2 ]]; then
+        sedmod $uid "$1" "$2"
+    else
+        sedmod $uid "$*"
+    fi
 elif [[ $mode == "note" ]]; then
     uid=$(getuid_witherror $1)
     shift