xz: In xz -lvv look at the widths of the check names too.

Now the widths of the check names is used to adjust the width
of the Check column. This way there no longer is a need to restrict
the widths of the check names to be at most ten terminal-columns.

src/xz/list.c

@@ -160,15 +160,15 @@ enum {
 /// Check ID to string mapping
 static const char check_names[LZMA_CHECK_ID_MAX + 1][12] = {
 	// TRANSLATORS: Indicates that there is no integrity check.
-	// This string is used in tables, so the width must not
+	// This string is used in tables. In older xz version this
-	// exceed ten columns with a fixed-width font.
+	// string was limited to ten columns in a fixed-width font, but
+	// nowadays there is no strict length restriction anymore.
 	N_("None"),
 	"CRC32",
 	// TRANSLATORS: Indicates that integrity check name is not known,
-	// but the Check ID is known (here 2). This and other "Unknown-N"
+	// but the Check ID is known (here 2). In older xz version these
-	// strings are used in tables, so the width must not exceed ten
+	// strings were limited to ten columns in a fixed-width font, but
-	// columns with a fixed-width font. It's OK to omit the dash if
+	// nowadays there is no strict length restriction anymore.
-	// you need space for one extra letter, but don't use spaces.
 	N_("Unknown-2"),
 	N_("Unknown-3"),
 	"CRC64",
@@ -256,6 +256,26 @@ init_colon_strs(void)
 static void
 init_headings(void)
 {
+	// Before going through the heading strings themselves, treat
+	// the Check heading specially: Look at the widths of the various
+	// check names and increase the width of the Check column if neeeded.
+	// The width of the heading name "Check" will then be handled normally
+	// with other heading names in the second loop in this function.
+	for (unsigned i = 0; i < ARRAY_SIZE(check_names); ++i) {
+		size_t len;
+		size_t w = tuklib_mbstr_width(_(check_names[i]), &len);
+
+		// Error handling like in init_colon_strs().
+		assert(w != (size_t)-1);
+		if (w == (size_t)-1)
+			w = len;
+
+		// If the translated string is wider than the minimum width
+		// set at compile time, increase the width.
+		if ((size_t)(headings[HEADING_CHECK].columns) < w)
+			headings[HEADING_CHECK].columns = w;
+	}
+
 	for (unsigned i = 0; i < ARRAY_SIZE(headings); ++i) {
 		size_t len;
 		size_t w = tuklib_mbstr_width(_(headings[i].str), &len);