From 9278a01d858d78a2e19e6da7388caa76bc1fc849 Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@tavianator.com>
Date: Sun, 30 Jan 2022 10:56:49 -0500
Subject: parse: Add support for ed and sed regexes

They're apparently the same as POSIX basic regexes.
---
 parse.c                      |  7 ++++++-
 tests.sh                     | 12 ++++++++++++
 tests/test_regextype_ed.out  |  1 +
 tests/test_regextype_sed.out |  1 +
 4 files changed, 20 insertions(+), 1 deletion(-)
 create mode 100644 tests/test_regextype_ed.out
 create mode 100644 tests/test_regextype_sed.out

diff --git a/parse.c b/parse.c
index acab8d5..ce2ea21 100644
--- a/parse.c
+++ b/parse.c
@@ -2323,7 +2323,10 @@ static struct expr *parse_regextype(struct parser_state *state, int arg1, int ar
 		goto list_types;
 	}
 
-	if (strcmp(type, "posix-basic") == 0) {
+	// See https://www.gnu.org/software/gnulib/manual/html_node/Predefined-Syntaxes.html
+	if (strcmp(type, "posix-basic") == 0
+	    || strcmp(type, "ed") == 0
+	    || strcmp(type, "sed") == 0) {
 		state->regex_flags = 0;
 	} else if (strcmp(type, "posix-extended") == 0) {
 		state->regex_flags = REG_EXTENDED;
@@ -2342,6 +2345,8 @@ list_types:
 	cfprintf(cfile, "Supported types are:\n\n");
 	cfprintf(cfile, "  ${bld}posix-basic${rs}:    POSIX basic regular expressions (BRE)\n");
 	cfprintf(cfile, "  ${bld}posix-extended${rs}: POSIX extended regular expressions (ERE)\n");
+	cfprintf(cfile, "  ${bld}ed${rs}:             Like ${grn}ed${rs} (same as ${bld}posix-basic${rs})\n");
+	cfprintf(cfile, "  ${bld}sed${rs}:            Like ${grn}sed${rs} (same as ${bld}posix-basic${rs})\n");
 	return NULL;
 }
 
diff --git a/tests.sh b/tests.sh
index c0a3a79..b9e21a9 100755
--- a/tests.sh
+++ b/tests.sh
@@ -625,6 +625,8 @@ gnu_tests=(
 
     test_regextype_posix_basic
     test_regextype_posix_extended
+    test_regextype_ed
+    test_regextype_sed
 
     test_samefile
     test_samefile_symlink
@@ -2040,6 +2042,16 @@ function test_regextype_posix_extended() {
     bfs_diff -regextype posix-extended -regex '\./(\()'
 }
 
+function test_regextype_ed() {
+    cd weirdnames
+    bfs_diff -regextype ed -regex '\./\((\)'
+}
+
+function test_regextype_sed() {
+    cd weirdnames
+    bfs_diff -regextype sed -regex '\./\((\)'
+}
+
 function test_d_path() {
     bfs_diff -d basic
 }
diff --git a/tests/test_regextype_ed.out b/tests/test_regextype_ed.out
new file mode 100644
index 0000000..0f0971e
--- /dev/null
+++ b/tests/test_regextype_ed.out
@@ -0,0 +1 @@
+./(
diff --git a/tests/test_regextype_sed.out b/tests/test_regextype_sed.out
new file mode 100644
index 0000000..0f0971e
--- /dev/null
+++ b/tests/test_regextype_sed.out
@@ -0,0 +1 @@
+./(
-- 
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