[hackers] [lchat] slackline: restore some comments || Tom Schwindl

[git]

commit 8ce1eb2bb5bac39ed33dd3aace28d40a53878c16
Author:     Tom Schwindl <schwi...@posteo.de>
AuthorDate: Wed Jan 11 16:08:36 2023 +0100
Commit:     Jan Klemkow <j.klem...@wemelug.de>
CommitDate: Tue Jan 24 16:59:40 2023 +0100

    slackline: restore some comments

diff --git a/slackline.c b/slackline.c
index 4573899..a56c030 100644
--- a/slackline.c
+++ b/slackline.c
@@ -164,7 +164,7 @@ sl_default(struct slackline *sl, int key)
        case CTRL_U:
                sl_reset(sl);
                break;
-       case CTRL_W:
+       case CTRL_W: /* erase previous word */
                while (sl->rcur != 0 && isspace((unsigned char) *(sl->ptr-1)))
                        sl_backspace(sl);
                while (sl->rcur != 0 && !isspace((unsigned char) *(sl->ptr-1)))
diff --git a/slackline_emacs.c b/slackline_emacs.c
index a5ed7ab..352b226 100644
--- a/slackline_emacs.c
+++ b/slackline_emacs.c
@@ -15,13 +15,13 @@ sl_emacs(struct slackline *sl, int key)
        case ESC_KEY:
                sl->esc = ESC;
                break;
-       case CTRL_A:
+       case CTRL_A:    /* start of line */
                sl_move(sl, HOME);
                break;
-       case CTRL_B:
+       case CTRL_B:     /* previous char */
                sl_move(sl, LEFT);
                break;
-       case CTRL_D:
+       case CTRL_D:    /* delete char in front of the cursor or exit */
                if (sl->rcur < sl->rlen) {
                        sl_move(sl, RIGHT);
                        sl_backspace(sl);
@@ -29,19 +29,19 @@ sl_emacs(struct slackline *sl, int key)
                        exit(EXIT_SUCCESS);
                }
                break;
-       case CTRL_E:
+       case CTRL_E:    /* end of line */
                sl_move(sl, END);
                break;
-       case CTRL_F:
+       case CTRL_F:    /* next char */
                sl_move(sl, RIGHT);
                break;
-       case CTRL_K:
+       case CTRL_K:    /* delete line from cursor to end */
                for (int i = sl->rlen - sl->rcur; i > 0; --i) {
                        sl_move(sl, RIGHT);
                        sl_backspace(sl);
                }
                break;
-       case CTRL_T:
+       case CTRL_T:    /* swap last two chars */
                if (sl->rcur >= 2) {
                        tmp = *sl_postoptr(sl, sl->rcur-1);
                        sl->buf[sl->rcur-1] = *sl_postoptr(sl, sl->rcur-2);