I have installed urxvt and I like the default font being used (white font in attached screenshot) but I can't figure out what it is.
The font is not defined in Xresources or Xdefaults.
I have also read that it uses one of the font in fc-list but I don't know which one is being used exactly.
If no fonts are specified in .Xdefaults, .xresources or on the command line, the default single-byte font rxvt uses is 7x14.
From the file src/defaultfont.h in the rxvt source:
82 #define NFONT_LIST \
83 "7x14", "6x10", "6x13", "8x13", "8x16", "10x20", "12x24"
These fonts are loaded into the default rxvt font set in their respective positions when nothing has been specified for that position. Note that if you use a multi-byte encoding, there is a different default.
In response to the comment below, I cannot say for sure whether that is 6x13 or not, all I can point to is this logic in defaultfont.c
300 if (encoding >= ENC_ISO8859_1 && encoding <= ENC_ISO8859_LAST) {
301 /* fallback for ISO-8859-* encodings */
302 k = encoding - ENC_ISO8859_1 + 1;
303 MIN_IT(k, 99999);
304 } else
305 /* fallback for "C", "POSIX", and invalid locales */
306 k = 0;
:
308 for (j = 0; j < MAX_NFONTS; j++) {
309 if (rs[Rs_font + j] == NULL) {
310 if (k == 0)
311 rs[Rs_font + j] = def_fontName[j];
312 else {
313 /* couple of wasted bytes each but lots of future expansion */
314 rs[Rs_font + j] = rxvt_malloc(STRLEN(defaultfont_8859[j]) + 4);
315 sprintf((char *)rs[Rs_font + j], defaultfont_8859[j], k);
316 }
317 }
If the locale is C the Rs_font[0] is 7x14 and Rs_font[2] is 6x13. When and where [0] vs [2] are used to render text is beyond my motivation to search through this unfamiliar code.
If the encoding is not C/POSIX, the 8859 fonts loaded by the above code are:
#define NFONT_LIST_ISO8859X \
"-misc-fixed-medium-r-normal--14-130-75-75-c-70-iso8859-%d", /*xf*/ \
"-misc-fixed-medium-r-normal--10-100-75-75-c-60-iso8859-%d", /*xf*/ \
"-misc-fixed-medium-r-semicondensed--13-120-75-75-c-60-iso8859-%d",/*xf*/ \
"-misc-fixed-medium-r-normal--13-120-75-75-c-80-iso8859-%d", /*xf*/ \
"-misc-fixed-medium-r-normal--16-120-100-100-c-80-iso8859-%d", /*xf*/ \
"-misc-fixed-medium-r-normal--20-200-75-75-c-100-iso8859-%d", /*xf*/ \
"-misc-fixed-medium-r-normal--24-170-100-100-c-120-iso8859-%d" /*xf*/
And if multi-byte encodings are in use, a whole different encoding specific set of fonts are used for the default.
When I invoke it on my Fedora 19 laptop I noticed this message in a terminal:
rxvt: can't load font "-misc-fixed-medium-r-normal--14-130-75-75-c-70-iso8859-1"
I asked this question some time ago, titled: Is there a command such as xwininfo, xdpyinfo, xprop, or xlsclient that will tell me what font an X client window is using?.
The best you'll be able to do is this:
$ lsof -p $(pgrep rxvt)
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
rxvt 17594 saml cwd DIR 253,2 12288 6553601 /home/saml
rxvt 17594 saml rtd DIR 253,1 4096 2 /
rxvt 17594 saml txt REG 253,1 167360 545755 /usr/bin/rxvt
rxvt 17594 saml mem REG 253,1 162472 549496 /usr/lib64/ld-2.17.so
rxvt 17594 saml mem REG 253,1 2108632 549497 /usr/lib64/libc-2.17.so
rxvt 17594 saml mem REG 253,1 22440 549506 /usr/lib64/libdl-2.17.so
rxvt 17594 saml mem REG 253,1 17856 549504 /usr/lib64/libXau.so.6.0.0
rxvt 17594 saml mem REG 253,1 125432 549505 /usr/lib64/libxcb.so.1.1.0
rxvt 17594 saml mem REG 253,1 1300352 549507 /usr/lib64/libX11.so.6.3.0
rxvt 17594 saml mem REG 253,1 43072 549528 /usr/lib64/libXrender.so.1.3.0
rxvt 17594 saml mem REG 253,1 26112 549530 /usr/lib64/libXfixes.so.3.1.0
rxvt 17594 saml mem REG 253,1 47568 549552 /usr/lib64/libXcursor.so.1.0.2
rxvt 17594 saml mem REG 253,1 76688 529186 /usr/lib64/libXpm.so.4.11.0
rxvt 17594 saml mem REG 253,1 62368 524974 /usr/lib64/libnss_files-2.17.so
rxvt 17594 saml mem REG 253,1 106055264 814955 /usr/lib/locale/locale-archive
rxvt 17594 saml 0r CHR 1,3 0t0 1028 /dev/null
rxvt 17594 saml 1u CHR 136,5 0t0 8 /dev/pts/5
rxvt 17594 saml 2u CHR 136,5 0t0 8 /dev/pts/5
rxvt 17594 saml 3u unix 0xffff8800acc4ce00 0t0 4920851 socket
rxvt 17594 saml 4u CHR 5,2 0t0 1298 /dev/ptmx
If there is a font file in use you'll see that file opened when you look at all the files that the rxvt process has in use.
