1 files changed, 25 insertions, 9 deletions

diff --git a/pw.c b/pw.c
index 2f19e25..69898e1 100644
--- a/pw.c
+++ b/pw.c
@@ -314,7 +314,7 @@ static void drawstatus(unsigned hist, int columns, unsigned stat, char *cmd)
             ptr += snprintf(ptr, end - ptr, ", ");
           if (i > 0)
             ptr += snprintf(ptr, end - ptr, "[%d]", i + 1);
-          ptr += snprintf(ptr, end - ptr, "%s", gr->pat);
+          ptr += snprintf(ptr, end - ptr, "%s%s", gr->inv ? "!" : "", gr->pat);
           first = 0;
         }
       }
@@ -758,9 +758,12 @@ int main(int argc, char **argv)
               int trig = 1;
               for (int i = 0; i < lim; i++) {
                 grep *gr = triglist[i];
-                if (gr && regexec(&gr->rx, circbuf[i], 0, NULL, 0) != 0) {
-                  trig = 0;
-                  break;
+                if (gr) {
+                  int match = regexec(&gr->rx, circbuf[i], 0, NULL, 0) == 0;
+                  if (match == gr->inv) {
+                    trig = 0;
+                    break;
+                  }
                 }
               }
               if (trig)
@@ -769,9 +772,12 @@ int main(int argc, char **argv)
               int trig = 1;
               for (int j = nlines - 1, i = 0; j >= 0 && i < maxtrig; j--, i++) {
                 grep *gr = triglist[i];
-                if (gr && regexec(&gr->rx, circbuf[j], 0, NULL, 0) != 0) {
-                  trig = 0;
-                  break;
+                if (gr) {
+                  int match = regexec(&gr->rx, circbuf[j], 0, NULL, 0) == 0;
+                  if (match == gr->inv) {
+                    trig = 0;
+                    break;
+                  }
                 }
               }
               if (trig)
@@ -1083,9 +1089,19 @@ int main(int argc, char **argv)
                 }
               } else if (kbd_state == kbd_trig && (int) trig < maxlines && trig < maxtrig) {
                 int err;
-                char *pat = dsdup(cmdbuf + 1);
+                char *rx = cmdbuf + 1;
+                int inv = 0;
                 regex_t regex;
 
+                if (strncmp(rx, "\\!", 2) == 0) {
+                  rx++;
+                } else if (rx[0] == '!') {
+                  rx++;
+                  inv = 1;
+                }
+
+                char *pat = dsdup(rx);
+
                 if (*pat && (err = regcomp(&regex, pat, regex_flags | REG_NOSUB))) {
                   regerror(err, &regex, cmdbuf, sizeof cmdbuf);
                   if (columns < (int) sizeof cmdbuf - 1)
@@ -1121,7 +1137,7 @@ int main(int argc, char **argv)
                     regfree(&regex);
                     regcomp(&gr->rx, pat, regex_flags | REG_NOSUB);
                     gr->pat = dsdup(pat);
-                    gr->inv = 0;
+                    gr->inv = inv;
                     triglist[trig] = gr;
                   }
                 }