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ea67f48050
Most string properties can be either %NULL (unset) or a non-empty
string.
For a few properties, like "gsm.apn", also the empty word is a valid
value. That makes it problematic to use from nmcli, because
nmcli connection modify "$PROFILE" gsm.apn ""
means to reset the default (NULL). How to configure the empty word?
For the APN, "" has a specific meaning, distinct from NULL, so we
need to be able to represent that.
The other problem with nmcli is that
nmcli -g gsm.apn connection show "$PROFILE"
is supposed to give you a value that you an set again, like
X="$(nmcli -g gsm.apn connection show "$PROFILE"; echo x)"
nmcli connection modify "$PROFILE2" gsm.apn "${X%$'\n'x}"
but for %NULL and "" the output would be the same.
The "solution" to that is interpreting "" as NULL (like we always did)
and a non-empty string that contains all whitespace, like a string with
one whitespace less. This way, all values can be expressed.
Note that in case of "gsm.apn", the string is anyway internally
normalized with g_strstrip(), so a string with all whitespace was
not expressable.
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| .. | ||
| tests | ||
| meson.build | ||
| nm-meta-setting-access.c | ||
| nm-meta-setting-access.h | ||
| nm-meta-setting-base-impl.c | ||
| nm-meta-setting-base-impl.h | ||
| nm-meta-setting-base.h | ||
| nm-meta-setting-desc.c | ||
| nm-meta-setting-desc.h | ||
| settings-docs.h.in | ||
| settings-docs.xsl | ||