Comment particular lines using regular expression and sed

Use non-greedy matching:

pcregrep -Mno '^\s*HS55_LH_OPTALL_GND_Z.*(\n|.)*?;$' file 

Output:

5: HS55_LH_OPTALL_GND_Z opt_plug_minor_rev_id0(.A (1'b1), .Z (minor_rev[0])); 7: HS55_LH_OPTALL_GND_Z opt_plug_minor_rev_id1(.A (1'b1), .Z (minor_rev[1])); 10:HS55_LH_OPTALL_GND_Z opt_plug_minor_rev_id2(.A (1'b1), .Z (minor_rev[2])); 12: HS55_LH_OPTALL_GND_Z opt_plug_minor_rev_id3(.A (1'b1), .Z (minor_rev[3])); 

You can also comment the lines with Vim:

:%s!^\s*\zsHS55_LH_OPTALL_GND_Z\_.\{-};$!/* & */! 

Result:

module util_minor_rev_id(minor_rev); output [3:0] minor_rev; wire [3:0] minor_rev; wire n_15, n_16, n_17, n_18, n_19, n_20, n_21, n_22; /* HS55_LH_OPTALL_GND_Z opt_plug_minor_rev_id0(.A (1'b1), .Z (minor_rev[0])); */ /* HS55_LH_OPTALL_GND_Z opt_plug_minor_rev_id1(.A (1'b1), .Z (minor_rev[1])); */ xyz /* HS55_LH_OPTALL_GND_Z opt_plug_minor_rev_id2(.A (1'b1), .Z (minor_rev[2])); */ /* HS55_LH_OPTALL_GND_Z opt_plug_minor_rev_id3(.A (1'b1), .Z (minor_rev[3])); */ endmodule 

Using GNU sed

This seems to comment out the lines that you want:

sed -z 's|HS55_LH_OPTALL_GND_Z[^;]*;|/*&*/|g' abc 

For example:

$ sed -z 's|HS55_LH_OPTALL_GND_Z[^;]*;|/*&*/|g' abc module util_minor_rev_id(minor_rev); output [3:0] minor_rev; wire [3:0] minor_rev; wire n_15, n_16, n_17, n_18, n_19, n_20, n_21, n_22; /*HS55_LH_OPTALL_GND_Z opt_plug_minor_rev_id0(.A (1'b1), .Z (minor_rev[0]));*/ /*HS55_LH_OPTALL_GND_Z opt_plug_minor_rev_id1(.A (1'b1), .Z (minor_rev[1]));*/ xyz /*HS55_LH_OPTALL_GND_Z opt_plug_minor_rev_id2(.A (1'b1), .Z (minor_rev[2]));*/ /*HS55_LH_OPTALL_GND_Z opt_plug_minor_rev_id3(.A (1'b1), .Z (minor_rev[3]));*/ endmodule 

The -z option (GNU only) tells sed to read the file in not a line at a time but until it finds a NUL character. Since sensible text files never have a NUL character, this has the effect of reading in the whole file at once.

The above uses a single substitute command to put /* and */ around the lines of interest.

To change the file in-place:

sed -i.bak -z 's|HS55_LH_OPTALL_GND_Z[^;]*;|/*&*/|g' abc 

Using other sed

For BSD/OSX or other sed:

sed '/HS55_LH_OPTALL_GND_Z/{:a; /;/{bb}; N; ba; :b; s|H|/*H|; s|;|;*/|;}' abc 

For example:

$ sed '/HS55_LH_OPTALL_GND_Z/{:a; /;/{bb}; N; ba; :b; s|H|/*H|; s|;|;*/|;}' abc module util_minor_rev_id(minor_rev); output [3:0] minor_rev; wire [3:0] minor_rev; wire n_15, n_16, n_17, n_18, n_19, n_20, n_21, n_22; /*HS55_LH_OPTALL_GND_Z opt_plug_minor_rev_id0(.A (1'b1), .Z (minor_rev[0]));*/ /*HS55_LH_OPTALL_GND_Z opt_plug_minor_rev_id1(.A (1'b1), .Z (minor_rev[1]));*/ xyz /*HS55_LH_OPTALL_GND_Z opt_plug_minor_rev_id2(.A (1'b1), .Z (minor_rev[2]));*/ /*HS55_LH_OPTALL_GND_Z opt_plug_minor_rev_id3(.A (1'b1), .Z (minor_rev[3]));*/ endmodule 

To change a file in-place:

sed -i.bak '/HS55_LH_OPTALL_GND_Z/{:a; /;/{bb}; N; ba; :b; s|H|/*H|; s|;|;*/|;}' abc 

Limitation: Since none of these sed commands parse your file, there may be situations where they do the wrong thing.

How it works

• /HS55_LH_OPTALL_GND_Z/{...}

  This selects lines that contain HS55_LH_OPTALL_GND_Z and, for those lines, the commands inside the curly braces are performed. These commands are described below.

• :a

  This defines a label a.

• /;/{bb}

  If the pattern space currently contains ;, then branch to label b.

• N

  Read in the next line from the file and store it in the pattern space.

• ba

  Branch to label a.

• :b

  This defines label b.

• s|H|/*H|; s|;|;*/|;

  If we get to here, that means that the pattern space starts with a line that contains HS55_LH_OPTALL_GND_Z and ends with a line that contains ;. For this pattern space, we put a /* in front of the first H and a */ after the first ;.