[PATCH 4/6] lib: drop trailing slash for path and folder searches (infix)

[David Bremner <david@tethera.net>]

This resolves an old bug reported by David Edmondson in 2014. The fix
is only needed for the "boolean" case, as probabilistic / phrase
searching already ignores punctuation.

This fix is only for the infix (xapian provided) query parser.

[1]: id:cunoasuolcv.fsf@gargravarr.hh.sledj.net
---
 lib/database-private.h        |  1 +
 lib/prefix.cc                 |  4 ++--
 lib/regexp-fields.cc          | 10 +++++++++-
 test/T100-search-by-folder.sh |  2 --
 4 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/lib/database-private.h b/lib/database-private.h
index 0c08fa15..657b1aa1 100644
--- a/lib/database-private.h
+++ b/lib/database-private.h
@@ -165,6 +165,7 @@ typedef enum {
     NOTMUCH_FIELD_EXTERNAL	= 1 << 0,
     NOTMUCH_FIELD_PROBABILISTIC = 1 << 1,
     NOTMUCH_FIELD_PROCESSOR	= 1 << 2,
+    NOTMUCH_FIELD_STRIP_TRAILING_SLASH	= 1 << 3,
 } notmuch_field_flag_t;
 
 /*
diff --git a/lib/prefix.cc b/lib/prefix.cc
index 0d92bdd7..857c05b9 100644
--- a/lib/prefix.cc
+++ b/lib/prefix.cc
@@ -46,7 +46,7 @@ prefix_t prefix_table[] = {
     { "mid",                    "Q",            NOTMUCH_FIELD_EXTERNAL |
       NOTMUCH_FIELD_PROCESSOR },
     { "path",                   "P",            NOTMUCH_FIELD_EXTERNAL |
-      NOTMUCH_FIELD_PROCESSOR },
+      NOTMUCH_FIELD_PROCESSOR | NOTMUCH_FIELD_STRIP_TRAILING_SLASH },
     { "property",               "XPROPERTY",    NOTMUCH_FIELD_EXTERNAL },
     /*
      * Unconditionally add ':' to reduce potential ambiguity with
@@ -55,7 +55,7 @@ prefix_t prefix_table[] = {
      * discussion.
      */
     { "folder",                 "XFOLDER:",     NOTMUCH_FIELD_EXTERNAL |
-      NOTMUCH_FIELD_PROCESSOR },
+      NOTMUCH_FIELD_PROCESSOR | NOTMUCH_FIELD_STRIP_TRAILING_SLASH },
     { "date",                   NULL,           NOTMUCH_FIELD_EXTERNAL |
       NOTMUCH_FIELD_PROCESSOR },
     { "query",                  NULL,           NOTMUCH_FIELD_EXTERNAL |
diff --git a/lib/regexp-fields.cc b/lib/regexp-fields.cc
index c6d9d94f..7e9d959c 100644
--- a/lib/regexp-fields.cc
+++ b/lib/regexp-fields.cc
@@ -235,7 +235,15 @@ RegexpFieldProcessor::operator() (const std::string & str)
 	    return parser.parse_query (query_str, NOTMUCH_QUERY_PARSER_FLAGS, term_prefix);
 	} else {
 	    /* Boolean prefix */
-	    std::string term = term_prefix + str;
+	    std::string query_str;
+	    std::string term;
+
+	    if (str.length () > 1 && str.at (str.size () - 1) == '/')
+		query_str = str.substr (0, str.size () - 1);
+	    else
+		query_str = str;
+
+	    term = term_prefix + query_str;
 	    return Xapian::Query (term);
 	}
     }
diff --git a/test/T100-search-by-folder.sh b/test/T100-search-by-folder.sh
index fbc68266..0123d0b2 100755
--- a/test/T100-search-by-folder.sh
+++ b/test/T100-search-by-folder.sh
@@ -32,7 +32,6 @@ test_expect_equal "$output" "MAIL_DIR/bad/news/msg-XXX
 MAIL_DIR/duplicate/bad/news/msg-XXX"
 
 test_begin_subtest "Folder search with --output=files (trailing /)"
-test_subtest_known_broken
 output=$(notmuch search --output=files folder:bad/news/ | notmuch_search_files_sanitize)
 test_expect_equal "$output" "MAIL_DIR/bad/news/msg-XXX
 MAIL_DIR/duplicate/bad/news/msg-XXX"
@@ -127,7 +126,6 @@ MAIL_DIR/bar/18:2,
 MAIL_DIR/cur/51:2,"
 
 test_begin_subtest "path: search (trailing /)"
-test_subtest_known_broken
 output=$(notmuch search --output=files path:"bar/" | notmuch_search_files_sanitize | sort)
 # cur/51:2, is a duplicate of bar/18:2,
 test_expect_equal "$output" "MAIL_DIR/bar/17:2,
-- 
2.34.1