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This commit mostly duplicates the wlr_log functions, although
with a sway_* prefix. (This is very similar to PR #2009.)
However, the logging function no longer needs to be replaceable,
so sway_log_init's second argument is used to set the exit
callback for sway_abort.
wlr_log_init is still invoked in sway/main.c
This commit makes it easier to remove the wlroots dependency for
the helper programs swaymsg, swaybg, swaybar, and swaynag.
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swaybg used to be invoked with sh, which made escaping necessary. This is no
longer necessary.
Fixes https://github.com/swaywm/sway/issues/3456
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Patch tested by compiling with `__attribute__ ((format (printf, 2, 3)))`
applied to `cmd_results_new`.
String usage constants have been converted from pointers to arrays when
encountered. General handler format strings were sometimes modified to
include the old input string, especially for unknown command errors.
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Adds the function `config_add_swaynag_warning(char *fmt, ...)` so that
handlers can add warnings to the swaynag config log in a uniform way.
The formatting is identical to errors and include the line number, line,
and config path.
This also alters the background file access warning to use the function
and introduces a warning for duplicate bindings.
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This changes it back so the path given to swaybg is enclosed in quotes.
Additionally, the only character that is escaped in the path stored is
double quotes now. This makes it so we don't need to keep an exhaustive
list of characters that need to be escaped.
The end user will still need to escape these characters in their config
or when passed to swaybg.
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wordexp p is now initialized to {0} to prevent a segfault on wordfree
in the failure case.
File paths with single quotes and double quotes are now supported. The
quote can either be wrapped in the other quote or escaped with three
backslashes.
Additionally to make passing file paths with double quotes to swaybg
easier, instead of enclosing the path given to swaybg in quotes, all
spaces, single quotes, and double quotes in the resulting path are now
escaped with a single backslash.
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On FreeBSD, snprintf and vsnprintf are visible only if
_XOPEN_SOURCE >= 600.
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This allows for a color to be set when the wallpaper does not fill the
entire output. If specified, the fallback color is also used when the
image path is inaccessible.
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Found through static analysis.
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- fixes a double-free error when access() failed.
- refactor code to make memory managment (alloc/free) more straightforward
- do not bring the temporary wordexp_t struct around
- do not postpone errors handling
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- src must be free after join_args()
- wordfree must bee used after wordexp
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if src is NULL due to a previous error we cannot use it in the command
result string.
Moreover if `src` points to `p.we_wordv[0]` we cannot use it after
`wordfree(&p)` in the command result string.
Bonus feature: If there was an error accessing the file, the string
rapresentation of the error is now included in the command result
string.
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