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Revert "settings.c: allow load_open_settings(NULL)."

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This reverts commit 1b2f39c24b.

The intention of that commit was to support the development of Uppity,
by arranging that I could get a Conf populated with completely default
values by calling load_open_settings(NULL,conf), with no risk of
interference from the normal PuTTY saved sessions full of client-side
configuration (which would have been confusing to apply unexpectedly
in a server).

So I arranged that a NULL session handle was never passed to the
low-level read_setting_[type] functions, in case it caused a segfault.
But I overlooked two things.

Firstly, on Unix, read_setting_* is where we check the tree234 of data
derived from X resources and/or -xrm command-line options. So if you
don't call those functions at all (e.g. if you have no on-disk PuTTY
saved configuration at all, not even Default Settings), you also don't
get your X defaults honoured.

Secondly, those functions themselves already all checked their
argument for NULL before doing anything dangerous with it. So the
thing I wanted to make possible was already possible _anyway_, without
me having to do anything!

So I'm exactly reverting that commit, because the _only_ thing it did
was to introduce a bug in X resource handling.
This commit is contained in:
Simon Tatham 2019-04-13 18:52:28 +01:00
parent b5597cc833
commit 39c20d4819
1 changed files with 4 additions and 4 deletions
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8
settings.c
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@ -107,7 +107,7 @@ char *get_remote_username(Conf *conf)
static char *gpps_raw(settings_r *sesskey, const char *name, const char *def)
{
char *ret = sesskey ? read_setting_s(sesskey, name) : NULL;
char *ret = read_setting_s(sesskey, name);
if (!ret)
ret = platform_default_s(name);
if (!ret)
@ -131,7 +131,7 @@ static void gpps(settings_r *sesskey, const char *name, const char *def,
static void gppfont(settings_r *sesskey, char *name,
Conf *conf, int primary)
{
FontSpec *result = sesskey ? read_setting_fontspec(sesskey, name) : NULL;
FontSpec *result = read_setting_fontspec(sesskey, name);
if (!result)
result = platform_default_fontspec(name);
conf_set_fontspec(conf, primary, result);
@ -140,7 +140,7 @@ static void gppfont(settings_r *sesskey, char *name,
static void gppfile(settings_r *sesskey, const char *name,
Conf *conf, int primary)
{
Filename *result = sesskey ? read_setting_filename(sesskey, name) : NULL;
Filename *result = read_setting_filename(sesskey, name);
if (!result)
result = platform_default_filename(name);
conf_set_filename(conf, primary, result);
@ -162,7 +162,7 @@ static void gppb(settings_r *sesskey, const char *name, bool def,
static int gppi_raw(settings_r *sesskey, const char *name, int def)
{
def = platform_default_i(name, def);
return sesskey ? read_setting_i(sesskey, name, def) : def;
return read_setting_i(sesskey, name, def);
}
static void gppi(settings_r *sesskey, const char *name, int def,