54103: support > and < comparisons via the test builtin

ChangeLog

@@ -1,5 +1,8 @@
 2025-11-24  Oliver Kiddle  <opk@zsh.org>
 
+	* 54103: Src/builtin.c, Src/parse.c, Test/C02cond.ztst:
+	support > and < comparisons via the test builtin
+
 	* 54094: Completion/Unix/Command/_base64,
 	Completion/Unix/Command/_basename, Completion/Unix/Command/_cat,
 	Completion/Unix/Command/_chmod, Completion/Unix/Command/_chown,

Src/builtin.c

@@ -7243,6 +7243,10 @@ testlex(void)
 	tok = INPAR;
     else if (!strcmp(*testargs, ")"))
 	tok = OUTPAR;
+    else if (!strcmp(*testargs, "<"))
+	tok = INANG;
+    else if (!strcmp(*testargs, ">"))
+	tok = OUTANG;
     else
 	tok = STRING;
     testargs++;

Src/parse.c

@@ -2495,6 +2495,8 @@ par_cond_2(void)
 	    /* three arguments: if the second argument is a binary operator, *
 	     * perform that binary test on the first and the third argument  */
 	    if (!strcmp(*testargs, "=")  ||
+		!strcmp(*testargs, "<") ||
+		!strcmp(*testargs, ">") ||
 		!strcmp(*testargs, "==") ||
 		!strcmp(*testargs, "!=") ||
 		(IS_DASH(**testargs) && get_cond_num(*testargs + 1) >= 0)) {
@@ -2661,6 +2663,12 @@ par_cond_triple(char *a, char *b, char *c)
 	ecstr(a);
 	ecstr(c);
 	ecadd(ecnpats++);
+    } else if ((t0 = (b[0] == '>' || b[0] == Outang) ||
+		b[0] == '<' || b[0] == Inang) && !b[1]) {
+	ecadd(WCB_COND(t0 ? COND_STRGTR : COND_STRLT, 0));
+	ecstr(a);
+	ecstr(c);
+	ecadd(ecnpats++);
     } else if ((b[0] == Equals || b[0] == '=') &&
 	       (b[1] == Equals || b[1] == '=') && !b[2]) {
 	ecadd(WCB_COND(COND_STRDEQ, 0));

Test/C02cond.ztst

@@ -214,6 +214,12 @@ F:scenario if you encounter it.
   [ '' != bar -a '' = '' ]
 0:strings with `[' builtin
 
+  [ zzd '>' zzb -a e '<' x ]
+0:string comparisons with `[' builtin
+
+  [ -o \> -a ]
+0:string comparison with strings that look like operators
+
   [ `echo 0` -lt `echo 1` ]
 0:substitution in `[' builtin