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Backport PR #29215 to improve keyboard layout matching

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This lays the ground for simplifying anaconda's keyboard layout
handling while improving results from where they are currently.
This commit is contained in:
Adam Williamson 2023-09-19 14:52:46 -07:00
parent 592d710bfd
commit 18e1ed3201
3 changed files with 181 additions and 0 deletions
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58
0001-find_legacy_keymap-fix-empty-variant-matching.patch Normal file
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@ -0,0 +1,58 @@
From a30ae31351ffa701ca860779495d4f52db4c462c Mon Sep 17 00:00:00 2001
From: Adam Williamson <awilliam@redhat.com>
Date: Fri, 15 Sep 2023 15:35:36 -0700
Subject: [PATCH 1/2] find_legacy_keymap: fix empty variant matching
We should give a match bonus if the X context variant is empty
and the xvariant column in kbd-model-map is "-" (which means
none). Currently, we don't, which means that if you call this
on a context with layouts bg,us and no variant, you get the
console layout bg_pho-utf8 instead of bg_bds-utf8 (because both
score the same, and the bg_pho-utf8 row comes first). You should
get bg_bds-utf8 in this case.
Signed-off-by: Adam Williamson <awilliam@redhat.com>
---
src/locale/localed-util.c | 2 +-
src/locale/test-localed-util.c | 12 ++++++++++++
2 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/src/locale/localed-util.c b/src/locale/localed-util.c
index 02fac9786b..6a05b50a31 100644
--- a/src/locale/localed-util.c
+++ b/src/locale/localed-util.c
@@ -825,7 +825,7 @@ int find_legacy_keymap(const X11Context *xc, char **ret) {
if (isempty(xc->model) || streq_ptr(xc->model, a[2])) {
matching++;
- if (streq_ptr(xc->variant, a[3])) {
+ if (streq_ptr(xc->variant, a[3]) || (isempty(xc->variant) && streq(a[3], "-"))) {
matching++;
if (streq_ptr(xc->options, a[4]))
diff --git a/src/locale/test-localed-util.c b/src/locale/test-localed-util.c
index cb66dffd48..a19d80a967 100644
--- a/src/locale/test-localed-util.c
+++ b/src/locale/test-localed-util.c
@@ -173,6 +173,18 @@ TEST(x11_convert_to_vconsole) {
assert_se(streq(vc.keymap, "es-dvorak"));
vc_context_clear(&vc);
+ /* es no-variant test is not very good as the desired match
+ comes first in the list so will win if both candidates score
+ the same. in this case the desired match comes second so will
+ not win unless we correctly give the no-variant match a bonus
+ */
+ log_info("/* test without variant, desired match second (bg,us:) */");
+ assert_se(free_and_strdup(&xc.layout, "bg,us") >= 0);
+ assert_se(free_and_strdup(&xc.variant, NULL) >= 0);
+ assert_se(x11_convert_to_vconsole(&xc, &vc) >= 0);
+ assert_se(streq(vc.keymap, "bg_bds-utf8"));
+ vc_context_clear(&vc);
+
log_info("/* test with old mapping (fr:latin9) */");
assert_se(free_and_strdup(&xc.layout, "fr") >= 0);
assert_se(free_and_strdup(&xc.variant, "latin9") >= 0);
--
2.41.0

117
0002-find_legacy_keymap-try-matching-with-layout-order-re.patch Normal file
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@ -0,0 +1,117 @@
From cf649cc21bf997b90606db664d74726fcaf002de Mon Sep 17 00:00:00 2001
From: Adam Williamson <awilliam@redhat.com>
Date: Fri, 15 Sep 2023 16:02:29 -0700
Subject: [PATCH 2/2] find_legacy_keymap: try matching with layout order
reversed
The lines in kbd-model-map date back to ye olde times (RH's old
system-config-keyboard), and I think predate this bug:
https://bugzilla.redhat.com/show_bug.cgi?id=1039185
where we got strong feedback that, for 'switched' layout setups
like Russian, US English should be the *first* layout and the
native layout the *second* one. This is how anaconda and, as of
recently, gnome-initial-setup configure such cases - but that
means, if we try to use localed to convert these configurations
using kbd-model-map, we get the wrong result (we get "us" as the
console layout). See also:
https://bugzilla.redhat.com/show_bug.cgi?id=1912609
where we first noticed this wasn't working right, but sadly, we
'fixed' it with a not-really-correct bodge in anaconda instead
of doing it properly.
Signed-off-by: Adam Williamson <awilliam@redhat.com>
---
src/locale/localed-util.c | 44 ++++++++++++++++++++++------------
src/locale/test-localed-util.c | 5 +++-
2 files changed, 33 insertions(+), 16 deletions(-)
diff --git a/src/locale/localed-util.c b/src/locale/localed-util.c
index 6a05b50a31..eba13a2ac3 100644
--- a/src/locale/localed-util.c
+++ b/src/locale/localed-util.c
@@ -803,21 +803,35 @@ int find_legacy_keymap(const X11Context *xc, char **ret) {
/* If we got an exact match, this is the best */
matching = 10;
else {
- /* We have multiple X layouts, look for an
- * entry that matches our key with everything
- * but the first layout stripped off. */
- if (startswith_comma(xc->layout, a[1]))
- matching = 5;
+ /* see if we get an exact match with the order reversed */
+ _cleanup_strv_free_ char **b = NULL;
+ _cleanup_free_ char *c = NULL;
+ r = strv_split_full(&b, a[1], ",", 0);
+ if (r < 0)
+ return r;
+ strv_reverse(b);
+ c = strv_join(b, ",");
+ if (!c)
+ return log_oom();
+ if (streq(xc->layout, c))
+ matching = 9;
else {
- _cleanup_free_ char *x = NULL;
-
- /* If that didn't work, strip off the
- * other layouts from the entry, too */
- x = strdupcspn(a[1], ",");
- if (!x)
- return -ENOMEM;
- if (startswith_comma(xc->layout, x))
- matching = 1;
+ /* We have multiple X layouts, look for an
+ * entry that matches our key with everything
+ * but the first layout stripped off. */
+ if (startswith_comma(xc->layout, a[1]))
+ matching = 5;
+ else {
+ _cleanup_free_ char *x = NULL;
+
+ /* If that didn't work, strip off the
+ * other layouts from the entry, too */
+ x = strdupcspn(a[1], ",");
+ if (!x)
+ return -ENOMEM;
+ if (startswith_comma(xc->layout, x))
+ matching = 1;
+ }
}
}
@@ -848,7 +862,7 @@ int find_legacy_keymap(const X11Context *xc, char **ret) {
}
}
- if (best_matching < 10 && !isempty(xc->layout)) {
+ if (best_matching < 9 && !isempty(xc->layout)) {
_cleanup_free_ char *l = NULL, *v = NULL, *converted = NULL;
/* The best match is only the first part of the X11
diff --git a/src/locale/test-localed-util.c b/src/locale/test-localed-util.c
index a19d80a967..f702ff29b0 100644
--- a/src/locale/test-localed-util.c
+++ b/src/locale/test-localed-util.c
@@ -192,11 +192,14 @@ TEST(x11_convert_to_vconsole) {
assert_se(streq(vc.keymap, "fr-latin9"));
vc_context_clear(&vc);
+ /* https://bugzilla.redhat.com/show_bug.cgi?id=1039185 */
+ /* us,ru is the x config users want, but they still want ru
+ as the console layout in this case */
log_info("/* test with a compound mapping (us,ru:) */");
assert_se(free_and_strdup(&xc.layout, "us,ru") >= 0);
assert_se(free_and_strdup(&xc.variant, NULL) >= 0);
assert_se(x11_convert_to_vconsole(&xc, &vc) >= 0);
- assert_se(streq(vc.keymap, "us"));
+ assert_se(streq(vc.keymap, "ru"));
vc_context_clear(&vc);
log_info("/* test with a compound mapping (ru,us:) */");
--
2.41.0

6
systemd.spec
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@ -107,6 +107,12 @@ Patch0001: https://github.com/systemd/systemd/pull/26494.patch
# Backport of patches that allow reloading of units
Patch0002: https://github.com/systemd/systemd/pull/28521/commits/631d2b05ec5195d1f8f8fbff8a2dfcbf23d0b7aa.patch
# Backport of improvements to console keyboard layout guessing
# https://github.com/systemd/systemd/pull/29215
# https://bugzilla.redhat.com/show_bug.cgi?id=1912609
Patch0003: 0001-find_legacy_keymap-fix-empty-variant-matching.patch
Patch0004: 0002-find_legacy_keymap-try-matching-with-layout-order-re.patch
# Those are downstream-only patches, but we don't want them in packit builds:
# https://bugzilla.redhat.com/show_bug.cgi?id=1738828
Patch0490: use-bfq-scheduler.patch