I haven't worked with the code, but to me, it looks like: 1. it's stuffing a pointer to the first index into the passed in array into q 2. it's replacing any newlines in the string with nulls 3. it's calling a colon() function to execute the command mode command associated with the string that was passed in.
How about adding the feature of interpreting an interrupt (Control-C) as the Esc key, just like vim does? That's the feature I miss most, and one of the reasons I switched our embedded Linux distro to using the full vim instead of the Busybox one. Mike Dean md...@emacinc.com http://www.emacinc.com/ Engineer EMAC, Inc. 618-529-4525 Ext. 330 618-457-0110 Fax 2390 EMAC Way Carbondale, Il 62901 On Tue, Mar 18, 2014 at 9:51 AM, Jody Bruchon <j...@jodybruchon.com> wrote: > On 3/18/2014 9:24 AM, Laszlo Papp wrote: > >> Hi, >> >> do you plan to implement this feature any soon? It would be really >> useful. Currently, it is a bit difficult to do undo in certain >> scenarios when editing files on the embedded board. >> > > Out of an interest in seeing this feature, I'm looking at vi.c and find > that the code is not terribly well commented. For example, variables 'p' > and 'q' are used throughout the code but no explanation of what they are > supposed to be for or what is happening with them exists. > > Could someone who has worked on this code give me an idea of what this > block of code really does? > > -snip- > > #if ENABLE_FEATURE_VI_COLON > { > char *p, *q; > int n = 0; > > while ((p = initial_cmds[n]) != NULL) { > do { > q = p; > p = strchr(q, '\n'); > if (p) > while (*p == '\n') > *p++ = '\0'; > if (*q) > colon(q); > } while (p); > free(initial_cmds[n]); > initial_cmds[n] = NULL; > n++; > } > } > #endif > > -snip- > > > Thanks in advance! > -Jody Bruchon > > _______________________________________________ > busybox mailing list > busybox@busybox.net > http://lists.busybox.net/mailman/listinfo/busybox >
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