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acme: allow spaces in window names

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There are many things we could do to make this work.
an environment variable to control the character.
Another option would be to use U+00A0 (non-breaking space),
which renders the same as space.

This change avoids changing the separator character and instead
assumes that if the left side of the tag already ends in " Del Snarf |"
then what comes before that is the file name.
Acme already aggressively preserves the "Del Snarf |",
so this should work decently well as a stop-gap.
We can always try something else later.

Fixes #26.
Fixes #104.
Fixes #329.
This commit is contained in:
Russ Cox 2020-01-13 20:02:54 -05:00
parent 26cae02da7
commit 7b1c85f6e8
2 changed files with 20 additions and 5 deletions
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2
src/cmd/acme/look.c
View file

@ -610,7 +610,7 @@ expandfile(Text *t, uint q0, uint q1, Expand *e)
if(nname == -1)
nname = n;
for(i=0; i<nname; i++)
if(!isfilec(r[i]))
if(!isfilec(r[i]) && r[i] != ' ')
goto Isntfile;
/*
* See if it's a file name in <>, and turn that into an include

23
src/cmd/acme/wind.c
View file

@ -439,16 +439,31 @@ wincleartag(Window *w)
Rune*
parsetag(Window *w, int *len)
{
static Rune Ldelsnarf[] = { ' ', 'D', 'e', 'l', ' ', 'S', 'n', 'a', 'r', 'f', 0 };
static Rune Lspacepipe[] = { ' ', '|', 0 };
static Rune Ltabpipe[] = { ' ', '|', 0 };
int i;
Rune *r;
Rune *r, *p, *pipe;
r = runemalloc(w->tag.file->b.nc+1);
bufread(&w->tag.file->b, 0, r, w->tag.file->b.nc);
r[w->tag.file->b.nc] = '\0';
for(i=0; i<w->tag.file->b.nc; i++)
if(r[i]==' ' || r[i]=='\t')
break;
/*
* " |" or "\t|" ends left half of tag
* If we find " Del Snarf" in the left half of the tag
* (before the pipe), that ends the file name.
*/
pipe = runestrstr(r, Lspacepipe);
if((p = runestrstr(r, Ltabpipe)) != nil && (pipe == nil || p < pipe))
pipe = p;
if((p = runestrstr(r, Ldelsnarf)) != nil && (pipe == nil || p < pipe))
i = p - r;
else {
for(i=0; i<w->tag.file->b.nc; i++)
if(r[i]==' ' || r[i]=='\t')
break;
}
*len = i;
return r;
}