Commit Graph

612 Commits

Author SHA1 Message Date
David JULIEN d5b5994a28
Merge branch 'upstream'
update to 5.2
2023-01-08 15:20:25 +01:00
Hiltjo Posthuma ba1a347dca readstdin: allocate amount of items
Keep track of the amount of items (not a total buffer size), allocate an array of
new items. For now change BUFSIZ bytes to 256 * sizeof(struct item)).
2022-10-31 11:52:30 +01:00
Hiltjo Posthuma bcbc1ef5c4 readstdin: add a comment
Maybe too obvious / redundant, but OK.
2022-10-31 11:46:10 +01:00
NRK 689d9bfcf6 fix leak when getline fails
according to the getline(3) documentation, the calling code needs to
free the buffer even if getline fails.

dmenu currently doesn't do that which results in a small leak in case of
failure (e.g when piped /dev/null)

	$ ./dmenu < /dev/null
	==8201==ERROR: LeakSanitizer: detected memory leaks
	Direct leak of 120 byte(s) in 1 object(s) allocated from:
	    #0 0x7f6bf5785ef7 in malloc
	    #1 0x7f6bf538ec84 in __getdelim
	    #2 0x405d0c in readstdin dmenu.c:557

moving `line = NULL` inside the loop body wasn't strictly necessary, but
IMO it makes it more apparent that `line` is getting cleared to NULL
after each successful iteration.
2022-10-31 11:40:35 +01:00
Hiltjo Posthuma e42c036634 dmenu: small XmbLookupString code improvements
* Increase the length of composed strings to the same limit as st (32 to 64 bytes).
* Initialize ksym to NoSymbol to be safe: currently this is not an issue though.
* Add comments to clarify the return values of XmbLookupString a bit.
2022-10-26 09:43:17 +02:00
Hiltjo Posthuma 1d2b462acf bump version to 5.2 2022-10-04 19:36:02 +02:00
Tom Schwindl 7ec32fe494 dmenu: use die() to print the usage message 2022-10-01 13:20:40 +02:00
Hiltjo Posthuma fce06f437d remove workaround for a crash with color emojis on some systems, now fixed in libXft 2.3.5
2022-09-17 15:32:26 +02:00
Hiltjo Posthuma 1e8c5b68f4 fix a regression in the previous commit for tab complete
Reported by Santtu Lakkala <>, thanks!
2022-09-02 19:09:50 +02:00
NRK 528d39b011 tab-complete: figure out the size before copying
we already need to know the string length since `cursor` needs to be

so just calculate the length beforehand and use `memcpy` to copy exactly
as much as needed (as opposed to `strncpy` which always writes `n`
2022-09-02 13:00:48 +02:00
NRK 32db2b1251 readstdin: use getline(3)
currently readstdin():
   - fgets() into a local buffer,
   - strchr() the buffer to eleminate the newline
   - stdups() the buffer into items

a simpler way is to just use getline(3), which will do the allocation
for us; eliminating the need for stdup()-ing.

additionally getline returns back the amount of bytes read, which
eliminates the need for strchr()-ing to find the newline.
2022-09-02 12:53:34 +02:00
Hiltjo Posthuma e35976f4a5 sync code-style patch from libsl 2022-08-08 10:42:54 +02:00
Hiltjo Posthuma 28fb3e2812 Makefile: add manual path for OpenBSD 2022-05-01 18:38:25 +02:00
Hiltjo Posthuma fe5d5c6709 fix incorrect comment, math is hard 2022-04-30 13:19:33 +02:00
Hiltjo Posthuma e1e1de7b3b inputw: improve correctness and startup performance, by NRK
Always use ~30% of the monitor width for the input in horizontal mode.

Patch adapted from NRK patches.
This also does not calculate inputw when using vertical mode anymore (because
the code is removed).
2022-04-29 20:18:02 +02:00
NRK 33685b06e9 drw_text: account for fallback fonts in ellipsis_width
additionally, ellipsis_width (which shouldn't change) is made static to
avoid re-calculating it on each drw_text() call.
2022-04-16 16:21:01 +02:00
NRK e4827b0c40 drw_text: don't segfault when called with 0 width
this patch just rejects *any* 0 width draws, which is surely an error by
the caller.

this also guards against cases where the width is too small for the
ellipsis to fit, so ellipsis_w will remain 0.
reported by Bakkeby <>
2022-04-16 16:21:01 +02:00
Hiltjo Posthuma e73651f12a fix UB with the function iscntrl()
From commit 6818e07291 by NRK, thanks
2022-03-26 17:58:47 +01:00
Hiltjo Posthuma 31fa07b984 Revert "avoid redraw when there's no change"
This reverts commit 6818e07291.

This broke keys such as ^W to delete-backward-word
2022-03-26 17:57:50 +01:00
NRK 6818e07291 avoid redraw when there's no change
while i was timing the performance issue, i noticed that there was lots
of random redrawing going on.

turns out there were coming from here; if someone presses CTRL/ALT etc
without pressing anything else, nothing will be inserted, so nothing
will change. but the code will `break`, go down and do a needless redraw.

this patch changes it to simply return if the keypress iscntrl()

also avoid potential UB by casting *buf into an unsigned char.
2022-03-25 22:53:50 +01:00
NRK b43ec0577f free all allocated items, use %zu for size_t
`items` itself is not checked for NULL as calling free on NULL is defined to be
a no-op.
2022-03-25 22:53:50 +01:00
NRK 22511c41d5 drw_text: improve performance when there's no match
this was the last piece of the puzzle, the case where we can't find any
font to draw the codepoint.

in such cases, we use XftFontMatch() which is INSANELY slow. but that's
not the real problem. the real problem was we were continuously trying
to match the same thing over and over again.

this patch introduces a small cache, which keeps track a couple
codepoints for which we know we won't find any matches.

with this, i can dump lots of emojies into dmenu where some of them
don't have any matching font, and still not have dmenu lag insanely or
FREEZE completely when scrolling up and down.

this also improves startup time, which will of course depend on the
system and all installed fonts; but on my system and test case i see the
following startup time drop:

before -> after
60ms   -> 34ms
2022-03-25 22:49:07 +01:00
NRK 77526f756e inputw: improve correctness and startup performance
a massive amount of time inside readstdin() is spent trying to get the
max input width and then put it into inputw, only for it to get clamped
down to mw/3 inside setup().

it makes more sense to calculate inputw inside setup() once we have mw
available. similar to the last patch, i see noticeable startup
performance improvement:

before -> after
160ms  -> 60ms

additionally this will take fallback fonts into account compared to the
previous version, so it's not only more performant but also more correct.
2022-03-25 22:49:07 +01:00
NRK 7269c5355d significantly improve performance on large strings
this replaces inefficient pattern of `MIN(TEXTW(..), n)` with
drw_fontset_getwidth_clamp() instead, which is far more efficient when
we only want up to a certain width.

dumping a decently sized (unicode) emoji file into dmenu, I see the
startup time drop significantly with this patch.

before -> after
360ms  -> 160ms

this should also noticeably improve input latency (responsiveness) given
that calcoffsets() and drawmenu() are pretty hot functions.
2022-03-25 22:49:07 +01:00
NRK 6be057f060 introduce drw_fontset_getwidth_clamp()
getting the width of a string is an O(n) operation, and in many cases
users only care about getting the width upto a certain number.

instead of calling drw_fontset_getwidth() and *then* clamping the
result, this patch introduces drw_fontset_getwidth_clamp() function,
similar to strnlen(), which will stop once we reach n.

the `invert` parameter was overloaded internally to preserve the API,
however library users should be calling drw_fontset_getwidth_clamp() and
not depend upon internal behavior of drw_text().
2022-03-25 22:49:07 +01:00
NRK 41fdabbf7c drw_text: improve both performance and correctness
this patch makes some non-trivial changes, which significantly improves
the performance of drawing large strings as well as fixes any issues
regarding the printing of the ellipsis when string gets truncated.

* performance:

before there were two O(n) loops, one which finds how long we can go
without changing font, and the second loop would (incorrectly) truncate
the string if it's too big.

this patch merges the overflow calculation into the first loop and exits
out when overflow is detected. when dumping lots of emojies into dmenu,
i see some noticeable startup time improvement:

before -> after
460ms  -> 360ms

input latency when scrolling up/down is also noticeably better and can
be tested with the following:

	for _ in $(seq 20); do
		cat /dev/urandom | base64 | tr -d '\n' | head -c 1000000
	done | ./dmenu -l 10

* correctness:

the previous version would incorrectly assumed single byte chars and
would overwrite them with '.' , this caused a whole bunch of obvious
problems, including the ellipsis not getting rendered if then font

in addition to exiting out when we detect overflow, this patch also
keeps track of the last x-position where the ellipsis would fit. if we
detect overflow, we simply make a recursing call to drw_text() at the
ellipsis_x position and overwrite what was there.

so now the ellipsis will always be printed properly, regardless of
weather the font changes or if the string is single byte char or not.

the idea of rendering the ellipsis on top incase of overflow was
from Bakkeby <>, thanks! however the original patch had
some issues incorrectly truncating the prompt (-p flag) and cutting off
emojies. those have been fixed in here.
2022-03-25 22:49:07 +01:00
Hiltjo Posthuma 3a505cebe8 remove false-positive warning for int comparison as bool
Reported by Prathu Baronia <>, patch slightly changed.

2022-03-01 22:45:39 +01:00
Hiltjo Posthuma 308fe78b83 bump version to 5.1 2022-02-11 12:26:35 +01:00
Hiltjo Posthuma c4b656e0da code-style: rm newline (oops) 2022-02-08 21:45:28 +01:00
Hiltjo Posthuma 3e39c526d2 revert using strcasestr and use a more optimized portable version
... compared to the old cistrstr().

Thanks for the feedback!
2022-02-08 19:38:23 +01:00
Hiltjo Posthuma a9a3836861 follow-up fix: add -D_GNU_SOURCE for strcasestr for some systems 2022-02-07 10:36:13 +01:00
Hiltjo Posthuma eb96af27f4 improve performance of case-insensitive matching 2022-02-07 00:21:12 +01:00
David JULIEN 0f4c5faed3 feat: use XResources to define colors 2021-10-22 00:04:12 +02:00
Hiltjo Posthuma d78ff08d99 Revert "Improve speed of drw_text when provided with large strings"
This reverts commit c585e8e498.

It causes issues with truncation of characters when the text does not fit and
so on.  The patch should be reworked and properly tested.
2021-08-20 23:05:53 +02:00
Hiltjo Posthuma cd2133a5f6 add support for more keypad keys
The keypad Enter key was already supported. On some keyboard layouts like my
laptop the page-up and page-down key is more comfortable to use.
This adds a few lines but no complexity.
2021-08-09 18:39:25 +02:00
Miles Alan c585e8e498 Improve speed of drw_text when provided with large strings
Calculates len & ew in drw_font_getexts loop by incrementing instead of
decrementing; as such avoids proportional increase in time spent in loop
based on provided strings size.
2021-08-09 18:20:51 +02:00
Guilherme Janczak 523aa08f51 remove always true condition in if statement 2021-07-25 10:55:45 +02:00
David JULIEN e64ab65227 feat: update config.h when def get updated 2021-03-14 19:15:06 +01:00
David JULIEN 89c8231fb1
feat: add xresources management 2021-03-14 19:13:36 +01:00
Hiltjo Posthuma 1a13d0465d bump version to 5.0
... and bump LICENSE year.
2020-09-02 18:31:23 +02:00
Hiltjo Posthuma 9b38fda6fe Fix memory leaks in drw
Synced from dwm.
Patch by Alex Flierl <>, thanks.
2020-06-11 18:45:33 +02:00
Hiltjo Posthuma db6093f6ec revert IME support
dmenu will not handle IME support (st will, atleast for now).

revert parts of commit 377bd37e21
this commit also broke input focus.
2019-03-03 13:08:54 +01:00
Hiltjo Posthuma a9b1de384a improve xopenim error message
die() already prints a newline.
2019-02-12 22:58:35 +01:00
Hiltjo Posthuma 43b0c2c3dd make dmenu_path script executable
(as dmenu_run is)
2019-02-12 22:13:58 +01:00
Hiltjo Posthuma f5036b90ef fix crash when XOpenIM returns NULL
for example when IME variables are set, but the program is not started (yet).
2019-02-12 19:10:43 +01:00
Quentin Rameau 153aaf88bf Close when the embedding window is destroyed 2019-02-04 19:49:34 +01:00
Anselm R Garbe 65be875f5a Prepared 4.9 release. 2019-02-02 04:54:15 -08:00
Hiltjo Posthuma 7d19b2055d dmenu.1: document improved fastgrab behaviour from previous patch 2019-01-27 15:28:02 +01:00
dok 11a65377da Use slow path if stdin is a tty
If stdin is a tty and dmenu is ran with the fast option then it's
impossible to close stdin because the keyboard is already grabbed.
2019-01-27 15:26:04 +01:00
Quentin Rameau bbc464dc80 dmenu_path: always use the cachedir 2018-07-21 12:49:00 +02:00