Add regex error checking, and display a message to the user when their regular expression has a syntax error. Additionally, use a non-capturing group to surround the user input when `Match whole word` is enabled in case alternates are being used. Finally, add a safety check to highlighting to avoid an infinite loop when zero-length matches happen.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/SMAPI.Web/Views/LogParser/Index.cshtml b/src/SMAPI.Web/Views/LogParser/Index.cshtml
index dfb603f2..5e55906d 100644
--- a/src/SMAPI.Web/Views/LogParser/Index.cshtml
+++ b/src/SMAPI.Web/Views/LogParser/Index.cshtml
@@ -406,6 +406,12 @@ else if (log?.IsValid == true)
                             <span role="button" v-bind:class="{ active: !filterInsensitive }" v-on:click="toggleFilterInsensitive" title="Match exact capitalization only.">aA</span>
                             <span role="button" v-bind:class="{ active: filterUseWord, 'whole-word': true }" v-on:click="toggleFilterWord" title="Match whole word only."><i>“ ”</i></span>
                             <span role="button" v-bind:class="{ active: shouldHighlight }" v-on:click="toggleHighlight" title="Highlight matches in the log text.">HL</span>
+                            <div
+                                v-if="filterError"
+                                class="filter-error"
+                            >
+                                {{ filterError }}
+                            </div>
                         </div>
                         <filter-stats
                             v-bind:start="start"