Use color support where appropriate.

Color choice might still be refined, as could support for 8 bit colors.

ep.c

@@ -15,6 +15,7 @@
 #include <errno.h>
 #include <pthread.h>
 
+#include "colors.h"
 #include "info_strings.h"
 #include "ep.h"
 
@@ -81,7 +82,7 @@ int main(int argc, char **argv)
 	/* show we are on a different machine */
 	print_ssh();
 
-	print_pwd(home, pwd);
+	use_color(bcyan, print_pwd(home, pwd));
 
 	/* git status */
 	void *git_info;
@@ -117,7 +118,7 @@ int main(int argc, char **argv)
 			if (n > 1) {
 				/* jobs emoji is wide */
 				p(" ");
-				p(shell_jobs);
+				use_color(blue, p(shell_jobs));
 			}
 		}
 	}
@@ -140,13 +141,13 @@ int main(int argc, char **argv)
 		} else {
 			snprintf(dur, sizeof(dur), " %llds", command_duration);
 		}
-		p(dur);
+		use_color(green, p(dur));
 	}
 	/* 127 means command not found, that prints a big enough message already */
 	if (exit_status && exit_status != 127) {
 		char ex[256];
 		snprintf(ex, sizeof(ex), " [%d]", exit_status);
-		p(ex);
+		use_color(green, p(ex));
 	}
 
 	p(PROMPT);

git.c

@@ -5,6 +5,7 @@
 #include <stdlib.h>
 #include <pthread.h>
 
+#include "colors.h"
 #include "ep.h"
 
 struct git_info {
@@ -17,13 +18,15 @@ void print_git(void *arg)
 
 	if (git_info->git_branch_name) {
 		p(" ");
-		p(git_info->git_branch_name);
+		use_color(magenta, p(git_info->git_branch_name));
 
+		fg_color(blue);
 		if (git_info->git_status) {
 			p(" [");
 			p(git_info->git_status);
 			p("]");
 		}
+		reset_color();
 	}
 }
 

lang.c

@@ -4,6 +4,7 @@
 #include <stdint.h>
 #include <fnmatch.h>
 
+#include "colors.h"
 #include "ep.h"
 
 enum lang_index {
@@ -49,11 +50,14 @@ const struct lang_check l[] = {
 
 /* bitmap of 1<<lang_index */
 void print_lang(uint64_t mask) {
+	/* only change color if we're going to print something */
+	if (mask) fg_color(red);
 	for (int i = 0; i < lang_index_n; i++) {
 		if (mask & (1 << i)) {
 			p(l[i].display);
 		}
 	}
+	if (mask) reset_color();
 }
 
 void *lang_thread(void *arg)

ssh.c

@@ -1,6 +1,7 @@
 #include <stdlib.h>
 #include <sys/utsname.h>
 
+#include "colors.h"
 #include "ep.h"
 
 void print_ssh(void)
@@ -16,8 +17,10 @@ void print_ssh(void)
 		if (uname(&u) || !u.nodename[0])
 			return;
 
+		fg_color(yellow);
 		p("(");
 		p(u.nodename);
 		p(") ");
+		reset_color();
 	}
 }