diff --git a/src/components/CategoryEditModal.vue b/src/components/CategoryEditModal.vue
index 3ac610ff..3f05d2f9 100644
--- a/src/components/CategoryEditModal.vue
+++ b/src/components/CategoryEditModal.vue
@@ -6,7 +6,6 @@ b-modal(id="edit" ref="edit" title="Edit category" @show="resetModal" @hidden="h
       b-form-input(v-model="editing.name")
     b-input-group(prepend="Parent")
       b-select(v-model="editing.parent", :options="allCategories")
-    //| ID: {{editing.id}}
 
   hr
   div.my-1
@@ -14,21 +13,36 @@ b-modal(id="edit" ref="edit" title="Edit category" @show="resetModal" @hidden="h
     b-input-group.my-1(prepend="Type")
       b-select(v-model="editing.rule.type", :options="allRuleTypes")
     div(v-if="editing.rule.type === 'regex'")
-      b-input-group.my-1(prepend="Pattern")
-        b-form-input(v-model="editing.rule.regex")
-      div.d-flex
+      // Multi-pattern list — each pattern is one line with its own remove button
+      div.my-1(v-for="(pattern, index) in editing.rulePatterns" :key="index")
+        b-input-group
+          b-input-group-prepend
+            span.input-group-text Pattern {{ index + 1 }}
+          b-form-input(v-model="editing.rulePatterns[index]" @input="validateSinglePattern")
+          b-input-group-append
+            b-btn(variant="outline-danger" @click="removePattern(index)" :disabled="editing.rulePatterns.length <= 1")
+              icon(name="trash")
+      div.d-flex.align-items-center
+        div.flex-grow-1
+          b-btn.mt-1(size="sm" variant="outline-primary" @click="addPattern()")
+            icon.mr-1(name="plus")
+            | Add pattern
+        div.flex-grow-1.text-right
+          small.text-muted {{ editing.rulePatterns.length }} pattern(s)
+      div.d-flex.mt-2
         div.flex-grow-1
           b-form-checkbox(v-model="editing.rule.ignore_case" switch)
             | Case insensitive
         div.flex-grow-1
           small.text-right
-            div.text-danger(v-if="!validPattern") Invalid pattern
-            div.text-warning(v-if="validPattern && broad_pattern") Pattern too broad
+            div.text-danger(v-if="!validPattern") Invalid pattern(s)
+            div.text-warning(v-if="validPattern && broad_pattern && !patternErrors.length") Pattern(s) too broad
+            div.text-warning(v-if="patternErrors.length > 0")
+              | Pattern(s) {{ patternErrors.join(', ') }} invalid
 
   hr
   div.my-1
     b Color
-
     b-form-checkbox(v-model="editing.inherit_color" switch)
       | Inherit parent color
     div.mt-1(v-show="!editing.inherit_color")
@@ -54,9 +68,15 @@ import _ from 'lodash';
 import ColorPicker from '~/components/ColorPicker.vue';
 import { useCategoryStore } from '~/stores/categories';
 import { mapState } from 'pinia';
-import { validateRegex, isRegexBroad } from '~/util/validate';
+import {
+  validateRegex,
+  isRegexBroad,
+  splitRegexPipe,
+  joinRegexPipe,
+} from '~/util/validate';
 
 import 'vue-awesome/icons/trash';
+import 'vue-awesome/icons/plus';
 
 export default {
   name: 'CategoryEditModal',
@@ -71,15 +91,17 @@ export default {
       categoryStore: useCategoryStore(),
 
       editing: {
-        id: 0, // FIXME: Use ID assigned to category in store, in order for saves to be uniquely targeted
+        id: 0,
         name: null,
-        rule: {},
-        parent: [],
+        rule: {} as { type: string; regex?: string; ignore_case?: boolean },
+        rulePatterns: [] as string[],  // UI-only: split view of rule.regex
+        parent: [] as string[],
         inherit_color: true,
-        color: null,
+        color: null as string | null,
         inherit_score: true,
-        score: null,
+        score: null as number | null,
       },
+      patternErrors: [] as number[],  // 1-based indices of invalid patterns
     };
   },
   computed: {
@@ -90,17 +112,25 @@ export default {
       return [
         { value: 'none', text: 'None' },
         { value: 'regex', text: 'Regular Expression' },
-        //{ value: 'glob', text: 'Glob pattern' },
       ];
     },
     valid: function () {
       return this.editing.rule.type !== 'none' && this.validPattern;
     },
     validPattern: function () {
-      return this.editing.rule.type === 'regex' && validateRegex(this.editing.rule.regex || '');
+      if (this.editing.rule.type !== 'regex') return true;
+      const patterns = (this.editing.rulePatterns || [])
+        .map(p => (p || '').trim())
+        .filter(p => p.length > 0);
+      if (patterns.length === 0) return false;
+      return patterns.every(p => validateRegex(p));
     },
     broad_pattern: function () {
-      return this.editing.rule.type === 'regex' && isRegexBroad(this.editing.rule.regex || '');
+      if (this.editing.rule.type !== 'regex') return false;
+      const patterns = (this.editing.rulePatterns || [])
+        .map(p => (p || '').trim())
+        .filter(p => p.length > 0);
+      return patterns.some(p => isRegexBroad(p));
     },
   },
   watch: {
@@ -123,32 +153,36 @@ export default {
       this.$emit('hidden');
     },
     removeClass() {
-      // TODO: Show a confirmation dialog
-      // TODO: Remove children as well?
       this.categoryStore.removeClass(this.categoryId);
     },
     checkFormValidity() {
-      // FIXME
       return true;
     },
     handleOk(event) {
-      // Prevent modal from closing
       event.preventDefault();
-      // Trigger submit handler
       this.handleSubmit();
       this.$emit('ok');
     },
     handleSubmit() {
-      // Exit when the form isn't valid
       if (!this.checkFormValidity()) {
         return;
       }
 
-      // Save the category
+      // Join multi-pattern list into a single pipe-separated regex string
+      // so the backend receives the same format it always has.
+      const regex = joinRegexPipe(this.editing.rulePatterns);
+
       const new_class = {
         id: this.editing.id,
         name: this.editing.parent.concat(this.editing.name),
-        rule: this.editing.rule.type !== 'none' ? this.editing.rule : { type: 'none' },
+        rule:
+          this.editing.rule.type !== 'none'
+            ? {
+                type: 'regex',
+                regex,
+                ignore_case: this.editing.rule.ignore_case,
+              }
+            : { type: 'none' },
         data: {
           color: this.editing.inherit_color === true ? undefined : this.editing.color,
           score: this.editing.inherit_score === true ? undefined : this.editing.score,
@@ -156,11 +190,27 @@ export default {
       };
       this.categoryStore.updateClass(new_class);
 
-      // Hide the modal manually
       this.$nextTick(() => {
         this.$refs.edit.hide();
       });
     },
+    addPattern() {
+      this.editing.rulePatterns.push('');
+    },
+    removePattern(index: number) {
+      if (this.editing.rulePatterns.length <= 1) return;
+      this.editing.rulePatterns.splice(index, 1);
+      this.validateSinglePattern();
+    },
+    validateSinglePattern() {
+      this.patternErrors = [];
+      this.editing.rulePatterns.forEach((p, i) => {
+        const trimmed = (p || '').trim();
+        if (trimmed.length > 0 && !validateRegex(trimmed)) {
+          this.patternErrors.push(i + 1);  // 1-based for user display
+        }
+      });
+    },
     resetModal() {
       const cat = this.categoryStore.get_category_by_id(this.categoryId);
       const color = cat.data ? cat.data.color : undefined;
@@ -171,12 +221,17 @@ export default {
         id: cat.id,
         name: cat.subname,
         rule: _.cloneDeep(cat.rule),
+        rulePatterns:
+          cat.rule.type === 'regex' && cat.rule.regex
+            ? splitRegexPipe(cat.rule.regex)
+            : [''],
         parent: cat.parent ? cat.parent : [],
         color,
         inherit_color,
         score,
         inherit_score,
       };
+      this.patternErrors = [];
     },
   },
 };
diff --git a/src/components/CategoryEditTree.vue b/src/components/CategoryEditTree.vue
index b7095d6f..453e9ee3 100644
--- a/src/components/CategoryEditTree.vue
+++ b/src/components/CategoryEditTree.vue
@@ -2,7 +2,7 @@
 div
   div.row.py-2.class
     div.col-8.col-md-4
-      span(:style="{ marginLeft: (1.5 * depth) + 'em', cursor: _class.children.length > 0 ? 'pointer' : null}" @click="expanded = !expanded")
+      span(:style="{ marginLeft: (1.5 * depth) + 'em', cursor: _class.children.length > 0 ? 'pointer' : null }" @click="expanded = !expanded")
         span(v-if="_class.children.length > 0" style="opacity: 0.8")
           icon(:name="expanded ? 'regular/minus-square' : 'regular/plus-square'" scale="0.8")
         span(v-else style="opacity: 0.6")
@@ -16,7 +16,10 @@ div
 
     div.col-4.col-md-8
       span.d-none.d-md-inline
-        span(v-if="_class.rule.type === 'regex'") Rule ({{_class.rule.type}}): #[code {{_class.rule.regex}}]
+        span(v-if="_class.rule.type === 'regex'")
+          | Rule ({{_class.rule.type}}):
+          div.rule-item(v-for="(pat, indx) in splitRegex(_class.rule.regex)" :key="indx") 
+            code(:style='{ color: "#d63384 !important" }') {{ pat }}
         span.text-muted(v-else) No rule
       span.float-right
         b-btn.ml-1.border-0(size="sm", variant="outline-secondary", @click="showEditModal(_class.id)" pill)
@@ -42,6 +45,7 @@ import 'vue-awesome/icons/edit';
 
 import CategoryEditModal from './CategoryEditModal.vue';
 import { useCategoryStore } from '~/stores/categories';
+import { splitRegexPipe } from '~/util/validate';
 
 import _ from 'lodash';
 
@@ -100,6 +104,9 @@ export default {
     hideEditModal: function () {
       this.editingId = null;
     },
+    splitRegex: function (regex: string): string[] {
+      return splitRegexPipe(regex);
+    },
   },
 };
 </script>
diff --git a/src/util/validate.ts b/src/util/validate.ts
index 50cc7580..d9b84006 100644
--- a/src/util/validate.ts
+++ b/src/util/validate.ts
@@ -24,3 +24,86 @@ export function isRegexBroad(re: string | RegExp) {
     'THIS STRING SHOULD PROBABLY NOT MATCH: ' + alphabet + alphabet.toUpperCase() + numbers
   );
 }
+
+/**
+ * Split a combined regex string into individual patterns by top-level `|`.
+ * Parenthesized groups like (…), (?:…), (?=…) are traversed with depth
+ * tracking so a pipe inside a group doesn't trigger a split.
+ *
+ * Users who need a literal | in a single rule can escape it with \|.
+ */
+export function splitRegexPipe(regex: string): string[] {
+  if (!regex) return [];
+  // Bail out of the smart split for pathological inputs — pipe-joined
+  // rule sets shouldn't realistically exceed 1 000 characters.
+  if (regex.length > 1000) {
+    return [regex];
+  }
+  const parts: string[] = [];
+  let depth = 0;       // paren-nesting depth — skip | when inside a group
+  let escaping = false; // simple \-escape for \|
+  let start = 0;
+  for (let i = 0; i < regex.length; i++) {
+    const ch = regex[i];
+    if (escaping) {
+      escaping = false;
+      continue;
+    }
+    if (ch === '\\') {
+      escaping = true;
+      continue;
+    }
+    if (ch === '(') {
+      depth++;
+      continue;
+    }
+    if (ch === ')') {
+      if (depth > 0) depth--;
+      continue;
+    }
+    if (ch === '|' && depth === 0) {
+      parts.push(regex.slice(start, i));
+      start = i + 1;
+    }
+  }
+  parts.push(regex.slice(start));
+  return parts.filter(p => p.trim().length > 0);
+}
+
+/**
+ * Joins an array of regex patterns into a single pipe-separated string.
+ * Empty/whitespace-only entries are skipped.
+ */
+export function joinRegexPipe(patterns: string[]): string {
+  return patterns
+    .map(p => (p || '').trim())
+    .filter(p => p.length > 0)
+    .join('|');
+}
+
+/**
+ * Validates each pattern in a list and returns per-pattern results.
+ * `allValid` is true only when every pattern compiles successfully.
+ */
+export function validatePatternList(patterns: string[]): {
+  allValid: boolean;
+  results: { valid: boolean; broad: boolean }[];
+} {
+  const results = patterns
+    .filter(p => (p || '').trim().length > 0)
+    .map(p => ({
+      valid: validateRegex(p.trim()),
+      broad: isRegexBroad(p.trim()),
+    }));
+  return {
+    allValid: results.every(r => r.valid),
+    results,
+  };
+}
+
+/**
+ * Returns true if *any* pattern in the list is overly broad.
+ */
+export function isPatternListBroad(patterns: string[]): boolean {
+  return patterns.some(p => isRegexBroad(p));
+}