Append update.

README.md

@@ -127,8 +127,9 @@ Shell completion scripts for Bash, Fish and Zsh can be found in respective subdi
 
     edit options:
       --url keyword        specify url, works with -u only
-      --tag [...]          set comma-separated tags, works with -a, -u
+      --tag [+] [...]      set comma-separated tags, works with -a, -u
                            clears tags, if no arguments
+                           appends tags, if preceded by '+'
       -t, --title [...]    manually set title, works with -a, -u
                            if no arguments:
                            -a: do not set title, -u: clear title
@@ -282,13 +283,16 @@ The same number of iterations must be used for one lock & unlock instance. Defau
 20. **Delete tag** 'old tag' from DB:
 
         $ buku -r 'old tag'
-21. **Open URL** at index 15012014 in browser:
+21. **Append tags** 'tag 1', 'tag 2' to existing tags of bookmark at index 15012014:
+
+        $ buku -u 15012014 --tag + tag 1, tag 2
+22. **Open URL** at index 15012014 in browser:
 
         $ buku -o 15012014
-22. To list bookmarks with no title or tags for **bookkeeping**:
+23. To list bookmarks with no title or tags for **bookkeeping**:
 
         $ buku -S blank
-23. More **help**:
+24. More **help**:
 
         $ buku
         $ man buku

auto-completion/fish/buku.fish

@@ -20,7 +20,7 @@ complete -c buku -s r -l replace -r --description 'replace a tag'
 complete -c buku -s s -l sany    -r --description 'search any keyword'
 complete -c buku -s S -l sall    -r --description 'search all keywords'
 complete -c buku -l st -l stag      --description 'search by tag or show tags'
-complete -c buku -l tag             --description 'set tags'
+complete -c buku -l tag             --description 'set tags, use + to append'
 complete -c buku -s t -l title      --description 'set custom title'
 complete -c buku -s u -l update     --description 'update bookmark'
 complete -c buku -l url             --description 'set url'

auto-completion/zsh/_buku

@@ -25,7 +25,7 @@ args=(
     '(-s --sany)'{-s,--sany}'[search any keyword]:keyword(s)'
     '(-s --sall)'{-s,--sall}'[search all keywords]:keyword(s)'
     '(-st --stag)'{--st,--stag}'[search by tag or show tags]'
-    '(--tag)'{--tag}'[set tags]'
+    '(--tag)'{--tag}'[set tags, use + to append]'
     '(-t --title)'{-t,--title}'[set custom title]'
     '(-u --update)'{-u,--update}'[update bookmark]'
     '(--url)'{--url}'[set url]'

buku

@@ -1471,8 +1471,9 @@ if __name__ == '__main__':
     edit_group = argparser.add_argument_group(
         title='edit options',
         description='''--url keyword        specify url, works with -u only
---tag [...]          set comma-separated tags, works with -a, -u
+--tag [+] [...]      set comma-separated tags, works with -a, -u
                      clears tags, if no arguments
+                     appends tags, if preceded by '+'
 -t, --title [...]    manually set title, works with -a, -u
                      if no arguments:
                      -a: do not set title, -u: clear title

buku.1

@@ -69,8 +69,8 @@ Show program help and exit.
 .BI \--url " [...]"
 Specify the URL, works with -u only. Fetches and updates title if --title is not used.
 .TP
-.BI \--tag " [...]"
-Specify comma separated tags, works with -a, -u. Clears the tags, if no arguments passed.
+.BI \--tag " [+] [...]"
+Specify comma separated tags, works with -a, -u. Clears the tags, if no arguments passed. Appends tags, if list of tags is preceded by '+'.
 .TP
 .BI \-t " " \--title " [...]"
 Manually specify the title, works with -a, -u. Omits or clears the title, if no arguments passed.
@@ -346,13 +346,20 @@ The same number of iterations must be used for one lock & unlock instance. Defau
 .B buku -r 'old tag'
 .PP
 .IP 21. 4
+\fBAppend tags\fR 'tag 1', 'tag 2' to existing tags of bookmark at index 15012014:
+.PP
+.EX
+.IP
+.B buku -u 15012014 --tag + tag 1, tag 2
+.PP
+.IP 22. 4
 \fBOpen URL\fR at index 15012014 in browser:
 .PP
 .EX
 .IP
 .B buku -o 15012014
 .PP
-.IP 22. 4
+.IP 23. 4
 To list bookmarks with no title or tags for \fBbookkeeping\fR:
 .PP
 .EX